Add custom SQL to create a view for Teams and Leagues with migration.

Also state that this view is keyless.

EntityFrameworkCore.Console/Program.cs

@@ -3,6 +3,8 @@ using EntityFrameworkCore.Domain;
 using Microsoft.EntityFrameworkCore;
 
 using var context = new DeadBallZoneLeagueDbContext();
+// context.Database.Migrate(); // Can be used to automatically migrate on run.
+context.Database.EnsureCreated();
 
 // var teamOne = await context.Teams.FirstAsync(t => t.Id == 1);
 // var teamTwo = await context.Teams.FirstAsync(t => t.Id == 2);
@@ -13,6 +15,183 @@ using var context = new DeadBallZoneLeagueDbContext();
 // Rather than raise: "System.InvalidOperationException: Sequence contains no elements."
 // var firstCoach = await context.Coaches.FirstOrDefaultAsync();
 
+var details = await context.TeamsAndLeaguesView.ToListAsync();
+
+async Task ProjectionAndAnonymousDataTypes()
+{
+  var teams = await context.Teams
+    .Select(t => new TeamDetailsDTO
+    {
+      TeamId = t.Id,
+      TeamName = t.Name,
+      CoachName = t.Coach.Name,
+      TotalHomeGoals = t.HomeMatches.Sum(m => m.HomeTeamScore),
+      TotalAwayGoals = t.AwayMatches.Sum(m => m.AwayTeamScore)
+    })
+    .ToListAsync();
+
+  foreach (var team in teams)
+  {
+    Console.WriteLine($"{team.TeamName} - {team.CoachName} | H: {team.TotalHomeGoals} | A: {team.TotalAwayGoals}");
+  }
+}
+
+async Task FilterScoredHomeMatches()
+{
+  // Get teams where they scored on home matches.
+  var teams = await context.Teams
+    .Include(t => t.Coach)
+    .Include(t => t.HomeMatches.Where(m => m.HomeTeamScore > 0))
+    .ToListAsync();
+  foreach (var team in teams)
+  {
+    Console.WriteLine($"{team.Name} - {team.Coach.Name}");
+    foreach (var match in team.HomeMatches)
+    {
+      Console.WriteLine($"Score: {match.HomeTeamScore}");
+    }
+  }
+}
+
+async Task InsertMatches()
+{
+  var match1 = new Match
+  {
+    AwayTeamId = 10,
+    HomeTeamId = 12,
+    HomeTeamScore = 1,
+    AwayTeamScore = 0,
+    Date = new DateTime(2025, 6, 10),
+    TicketPrice = 20
+  };
+  var match2 = new Match
+  {
+    AwayTeamId = 6,
+    HomeTeamId = 9,
+    HomeTeamScore = 1,
+    AwayTeamScore = 0,
+    Date = new DateTime(2025, 6, 11),
+    TicketPrice = 20
+  };
+  var match3 = new Match
+  {
+    AwayTeamId = 13,
+    HomeTeamId = 15,
+    HomeTeamScore = 1,
+    AwayTeamScore = 0,
+    Date = new DateTime(2025, 6, 12),
+    TicketPrice = 20
+  };
+  var match4 = new Match
+  {
+    AwayTeamId = 4,
+    HomeTeamId = 11,
+    HomeTeamScore = 0,
+    AwayTeamScore = 1,
+    Date = new DateTime(2025, 6, 12),
+    TicketPrice = 20
+  };
+
+  await context.AddRangeAsync(match1, match2, match3, match4);
+  await context.SaveChangesAsync();
+}
+
+async Task ExplicitLoadingExample()
+{
+  var league = await context.FindAsync<League>(1);
+  if (!league.Teams.Any())
+  {
+    Console.WriteLine("Teams have not been loaded.");
+  }
+
+  await context.Entry(league)
+    .Collection(l => l.Teams)
+    .LoadAsync();
+
+  if (league.Teams.Any())
+  {
+    foreach (var team in league.Teams)
+    {
+      Console.WriteLine($"{team.Name}");
+    }
+  }
+}
+
+async Task EagerLoadingExample()
+{
+  var leagues = await context.Leagues
+    .Include(l => l.Teams)
+    .ThenInclude(t => t.Coach)
+    .ToListAsync();
+
+  foreach (var league in leagues)
+  {
+    Console.WriteLine($"League - {league.Name}");
+    foreach (var team in league.Teams)
+    {
+      Console.WriteLine($"* {team.Name} - {team.Coach.Name}");
+    }
+  }
+}
+
+async Task InsertRelatedData()
+{
+  // Insert record with a Foreign Key.
+  var match = new Match
+  {
+    AwayTeamId = 1,
+    HomeTeamId = 2,
+    AwayTeamScore = 0,
+    HomeTeamScore = 0,
+    Date = new DateTime(2025, 6, 1),
+    TicketPrice = 20
+  };
+
+  await context.AddAsync(match);
+  await context.SaveChangesAsync();
+
+  // Insert Parent/Child
+  var team = new Team
+  {
+    Name = "Neo Istanbul",
+    Coach = new Coach
+      {
+        Name = "Gimbal Wizbouski"
+      }
+  };
+
+  await context.AddAsync(team);
+  await context.SaveChangesAsync();
+
+  // Insert Parent with Children.
+  var league = new League
+  {
+    Name = "Star League",
+    Teams = new List<Team>
+    {
+      new Team
+      {
+        Name = "Neo Cairo",
+        Coach = new Coach
+          {
+            Name = "Damon Pulsar"
+          }
+      },
+      new Team
+      {
+        Name = "Cyborgs",
+        Coach = new Coach
+          {
+            Name = "C-1"
+          }
+      }
+    }
+  };
+
+  await context.AddAsync(league);
+  await context.SaveChangesAsync();
+}
+
 async Task ExecuteDelete(string name)
 {
   // var coaches = await context.Coaches.Where(c => c.Name == name).ToListAsync();
@@ -268,4 +447,13 @@ class TeamInfoDTO
 {
   public DateTime Created { get; set; }
   public string Name { get; set; }
+}
+
+class TeamDetailsDTO
+{
+  public int TeamId { get; set; }
+  public string TeamName { get; set; }
+  public string CoachName { get; set; }
+  public int TotalHomeGoals { get; set; }
+  public int TotalAwayGoals { get; set; }
 }

EntityFrameworkCore.Data/Configurations/CoachConfiguration.cs

@@ -0,0 +1,30 @@
+using EntityFrameworkCore.Domain;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace EntityFrameworkCore.Data;
+
+public class CoachConfiguration : IEntityTypeConfiguration<Coach>
+{
+  public void Configure(EntityTypeBuilder<Coach> builder)
+  {
+    builder.HasData(
+      // Use hardcoded dates, not dynamic data such as new DateTimeOffset.UtcNow.DateTime for seeding.
+      new Coach { Id = 1, Name = "Christian Southgate", CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33) },
+      new Coach { Id = 2, Name = "Rob Mann", CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33) },
+      new Coach { Id = 3, Name = "Jon Curtis", CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33) },
+      new Coach { Id = 4, Name = "Andy Taylor", CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33) },
+      new Coach { Id = 5, Name = "Steve Johnson", CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33) },
+      new Coach { Id = 6, Name = "Dan Cook", CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33) },
+      new Coach { Id = 7, Name = "Ken Jarvis", CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33) },
+      new Coach { Id = 8, Name = "Kenny Suzuki", CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33) },
+      new Coach { Id = 9, Name = "Gordon Hall", CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33) },
+      new Coach { Id = 10, Name = "John O Dowd", CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33) },
+      new Coach { Id = 11, Name = "Julian Widdows", CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33) },
+      new Coach { Id = 12, Name = "Andy Williams", CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33) },
+      new Coach { Id = 13, Name = "Trevor Williams", CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33) },
+      new Coach { Id = 14, Name = "Blake Deathray", CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33) },
+      new Coach { Id = 15, Name = "Rock Housebrick", CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33) }
+    );
+  }
+}

EntityFrameworkCore.Data/Configurations/TeamConfiguration.cs

@@ -8,23 +8,37 @@ public class TeamConfiguration : IEntityTypeConfiguration<Team>
 {
   public void Configure(EntityTypeBuilder<Team> builder)
   {
+    builder.HasIndex(t => t.Name).IsUnique();
+
+    builder.HasMany(m => m.HomeMatches) // A team has many home matches.
+      .WithOne(m => m.HomeTeam) // Mapped to the HomeTeam property.
+      .HasForeignKey(m => m.HomeTeamId)
+      .IsRequired()
+      .OnDelete(DeleteBehavior.Restrict);
+
+    builder.HasMany(m => m.AwayMatches) // A team has many home matches.
+      .WithOne(m => m.AwayTeam) // Mapped to the HomeTeam property.
+      .HasForeignKey(m => m.AwayTeamId)
+      .IsRequired()
+      .OnDelete(DeleteBehavior.Restrict);
+
     builder.HasData(
       // Use hardcoded dates, not dynamic data such as new DateTimeOffset.UtcNow.DateTime for seeding.
-      new Team { Id = 1, Name = "Neo Delhi", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33)},
+      new Team { Id = 1, Name = "Neo Delhi", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33), LeagueId = 2, CoachId = 1 },
-      new Team { Id = 2, Name = "Voodoo", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33) },
+      new Team { Id = 2, Name = "Voodoo", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33), LeagueId = 1, CoachId = 2 },
-      new Team { Id = 3, Name = "Penal X", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33) },
+      new Team { Id = 3, Name = "Penal X", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33), LeagueId = 1, CoachId = 3 },
-      new Team { Id = 4, Name = "Neo Tokyo", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33) },
+      new Team { Id = 4, Name = "Neo Tokyo", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33), LeagueId = 3, CoachId = 4 },
-      new Team { Id = 5, Name = "Neo Barcelona", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33) },
+      new Team { Id = 5, Name = "Neo Barcelona", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33), LeagueId = 2, CoachId = 5 },
-      new Team { Id = 6, Name = "Neo Manchester", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33) },
+      new Team { Id = 6, Name = "Neo Manchester", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33), LeagueId = 2, CoachId = 6 },
-      new Team { Id = 7, Name = "Neo Bangkok", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33) },
+      new Team { Id = 7, Name = "Neo Bangkok", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33), LeagueId = 3, CoachId = 7 },
-      new Team { Id = 8, Name = "Neo Amsterdam", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33) },
+      new Team { Id = 8, Name = "Neo Amsterdam", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33), LeagueId = 3, CoachId = 8 },
-      new Team { Id = 9, Name = "Killaklowns", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33) },
+      new Team { Id = 9, Name = "Killaklowns", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33), LeagueId = 1, CoachId = 9 },
-      new Team { Id = 10, Name = "Sol", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33) },
+      new Team { Id = 10, Name = "Sol", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33), LeagueId = 1, CoachId = 10 },
-      new Team { Id = 11, Name = "DEC", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33) },
+      new Team { Id = 11, Name = "DEC", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33), LeagueId = 4, CoachId = 11 },
-      new Team { Id = 12, Name = "Leopards", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33) },
+      new Team { Id = 12, Name = "Leopards", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33), LeagueId = 1, CoachId = 12 },
-      new Team { Id = 13, Name = "Harlequins", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33) },
+      new Team { Id = 13, Name = "Harlequins", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33), LeagueId = 1, CoachId = 13 },
-      new Team { Id = 14, Name = "Gladiators", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33) },
+      new Team { Id = 14, Name = "Gladiators", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33), LeagueId = 4, CoachId = 14 },
-      new Team { Id = 15, Name = "Fiz-O", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33) }
+      new Team { Id = 15, Name = "Fiz-O", CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33), LeagueId = 1, CoachId = 15 }
     );
   }
 }

EntityFrameworkCore.Data/DeadBallZoneLeagueDbContext.cs

@@ -20,6 +20,7 @@ public class DeadBallZoneLeagueDbContext : DbContext
   public DbSet<Coach> Coaches { get; set; }
   public DbSet<League> Leagues { get; set; }
   public DbSet<Match> Matches { get; set; }
+  public DbSet<TeamsAndLeaguesView> TeamsAndLeaguesView { get; set; }
 
   protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
   {
@@ -37,5 +38,8 @@ public class DeadBallZoneLeagueDbContext : DbContext
 
     // This line can be used, then individual configurations do not need to be loaded.
     modelBuilder.ApplyConfigurationsFromAssembly(Assembly.GetExecutingAssembly());
+
+    // This database object does not have a Primary Key, so we state that here, otherwise an exception is thrown.
+    modelBuilder.Entity<TeamsAndLeaguesView>().HasNoKey().ToView("vw_TeamsAndLeagues");
   }
 }

EntityFrameworkCore.Data/Migrations/20250407081627_AddTeamIdToCoach.Designer.cs

@@ -0,0 +1,315 @@
+// <auto-generated />
+using System;
+using EntityFrameworkCore.Data;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace EntityFrameworkCore.Data.Migrations
+{
+    [DbContext(typeof(DeadBallZoneLeagueDbContext))]
+    [Migration("20250407081627_AddTeamIdToCoach")]
+    partial class AddTeamIdToCoach
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "9.0.3");
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Coach", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<int?>("TeamId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Coaches");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.League", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Leagues");
+
+                    b.HasData(
+                        new
+                        {
+                            Id = 1,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Local League"
+                        },
+                        new
+                        {
+                            Id = 2,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "National League"
+                        },
+                        new
+                        {
+                            Id = 3,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Geosphere"
+                        },
+                        new
+                        {
+                            Id = 4,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Cyber war"
+                        });
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Match", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("AwayTeamId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("HomeTeamId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<decimal>("TicketPrice")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Matches");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Team", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("CoachId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("LeagueId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Teams");
+
+                    b.HasData(
+                        new
+                        {
+                            Id = 1,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 0,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Delhi"
+                        },
+                        new
+                        {
+                            Id = 2,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 0,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Voodoo"
+                        },
+                        new
+                        {
+                            Id = 3,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 0,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Penal X"
+                        },
+                        new
+                        {
+                            Id = 4,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 0,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Tokyo"
+                        },
+                        new
+                        {
+                            Id = 5,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 0,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Barcelona"
+                        },
+                        new
+                        {
+                            Id = 6,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 0,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Manchester"
+                        },
+                        new
+                        {
+                            Id = 7,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 0,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Bangkok"
+                        },
+                        new
+                        {
+                            Id = 8,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 0,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Amsterdam"
+                        },
+                        new
+                        {
+                            Id = 9,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 0,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Killaklowns"
+                        },
+                        new
+                        {
+                            Id = 10,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 0,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Sol"
+                        },
+                        new
+                        {
+                            Id = 11,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 0,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "DEC"
+                        },
+                        new
+                        {
+                            Id = 12,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 0,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Leopards"
+                        },
+                        new
+                        {
+                            Id = 13,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 0,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Harlequins"
+                        },
+                        new
+                        {
+                            Id = 14,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 0,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Gladiators"
+                        },
+                        new
+                        {
+                            Id = 15,
+                            CoachId = 0,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 0,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Fiz-O"
+                        });
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

EntityFrameworkCore.Data/Migrations/20250407081627_AddTeamIdToCoach.cs

@@ -0,0 +1,28 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace EntityFrameworkCore.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddTeamIdToCoach : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<int>(
+                name: "TeamId",
+                table: "Coaches",
+                type: "INTEGER",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "TeamId",
+                table: "Coaches");
+        }
+    }
+}

EntityFrameworkCore.Data/Migrations/20250407095737_AddRelationshipConstraints.Designer.cs

@@ -0,0 +1,490 @@
+// <auto-generated />
+using System;
+using EntityFrameworkCore.Data;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace EntityFrameworkCore.Data.Migrations
+{
+    [DbContext(typeof(DeadBallZoneLeagueDbContext))]
+    [Migration("20250407095737_AddRelationshipConstraints")]
+    partial class AddRelationshipConstraints
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "9.0.3");
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Coach", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Coaches");
+
+                    b.HasData(
+                        new
+                        {
+                            Id = 1,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Christian Southgate"
+                        },
+                        new
+                        {
+                            Id = 2,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Rob Mann"
+                        },
+                        new
+                        {
+                            Id = 3,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Jon Curtis"
+                        },
+                        new
+                        {
+                            Id = 4,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Andy Taylor"
+                        },
+                        new
+                        {
+                            Id = 5,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Steve Johnson"
+                        },
+                        new
+                        {
+                            Id = 6,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Dan Cook"
+                        },
+                        new
+                        {
+                            Id = 7,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Ken Jarvis"
+                        },
+                        new
+                        {
+                            Id = 8,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Kenny Suzuki"
+                        },
+                        new
+                        {
+                            Id = 9,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Gordon Hall"
+                        },
+                        new
+                        {
+                            Id = 10,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "John O Dowd"
+                        },
+                        new
+                        {
+                            Id = 11,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Julian Widdows"
+                        },
+                        new
+                        {
+                            Id = 12,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Andy Williams"
+                        },
+                        new
+                        {
+                            Id = 13,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Trevor Williams"
+                        },
+                        new
+                        {
+                            Id = 14,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Blake Deathray"
+                        },
+                        new
+                        {
+                            Id = 15,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Rock Housebrick"
+                        });
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.League", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Leagues");
+
+                    b.HasData(
+                        new
+                        {
+                            Id = 1,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Local League"
+                        },
+                        new
+                        {
+                            Id = 2,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "National League"
+                        },
+                        new
+                        {
+                            Id = 3,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Geosphere"
+                        },
+                        new
+                        {
+                            Id = 4,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Cyber war"
+                        });
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Match", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("AwayTeamId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("AwayTeamScore")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("HomeTeamId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("HomeTeamScore")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<decimal>("TicketPrice")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AwayTeamId");
+
+                    b.HasIndex("HomeTeamId");
+
+                    b.ToTable("Matches");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Team", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("CoachId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int?>("LeagueId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CoachId")
+                        .IsUnique();
+
+                    b.HasIndex("LeagueId");
+
+                    b.HasIndex("Name")
+                        .IsUnique();
+
+                    b.ToTable("Teams");
+
+                    b.HasData(
+                        new
+                        {
+                            Id = 1,
+                            CoachId = 1,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 2,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Delhi"
+                        },
+                        new
+                        {
+                            Id = 2,
+                            CoachId = 2,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 1,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Voodoo"
+                        },
+                        new
+                        {
+                            Id = 3,
+                            CoachId = 3,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 1,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Penal X"
+                        },
+                        new
+                        {
+                            Id = 4,
+                            CoachId = 4,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 3,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Tokyo"
+                        },
+                        new
+                        {
+                            Id = 5,
+                            CoachId = 5,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 2,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Barcelona"
+                        },
+                        new
+                        {
+                            Id = 6,
+                            CoachId = 6,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 2,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Manchester"
+                        },
+                        new
+                        {
+                            Id = 7,
+                            CoachId = 7,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 3,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Bangkok"
+                        },
+                        new
+                        {
+                            Id = 8,
+                            CoachId = 8,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 3,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Amsterdam"
+                        },
+                        new
+                        {
+                            Id = 9,
+                            CoachId = 9,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 1,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Killaklowns"
+                        },
+                        new
+                        {
+                            Id = 10,
+                            CoachId = 10,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 1,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Sol"
+                        },
+                        new
+                        {
+                            Id = 11,
+                            CoachId = 11,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 4,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "DEC"
+                        },
+                        new
+                        {
+                            Id = 12,
+                            CoachId = 12,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 1,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Leopards"
+                        },
+                        new
+                        {
+                            Id = 13,
+                            CoachId = 13,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 1,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Harlequins"
+                        },
+                        new
+                        {
+                            Id = 14,
+                            CoachId = 14,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 4,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Gladiators"
+                        },
+                        new
+                        {
+                            Id = 15,
+                            CoachId = 15,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 1,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Fiz-O"
+                        });
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Match", b =>
+                {
+                    b.HasOne("EntityFrameworkCore.Domain.Team", "AwayTeam")
+                        .WithMany("AwayMatches")
+                        .HasForeignKey("AwayTeamId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("EntityFrameworkCore.Domain.Team", "HomeTeam")
+                        .WithMany("HomeMatches")
+                        .HasForeignKey("HomeTeamId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("AwayTeam");
+
+                    b.Navigation("HomeTeam");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Team", b =>
+                {
+                    b.HasOne("EntityFrameworkCore.Domain.Coach", "Coach")
+                        .WithOne("Team")
+                        .HasForeignKey("EntityFrameworkCore.Domain.Team", "CoachId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("EntityFrameworkCore.Domain.League", "League")
+                        .WithMany("Teams")
+                        .HasForeignKey("LeagueId");
+
+                    b.Navigation("Coach");
+
+                    b.Navigation("League");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Coach", b =>
+                {
+                    b.Navigation("Team");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.League", b =>
+                {
+                    b.Navigation("Teams");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Team", b =>
+                {
+                    b.Navigation("AwayMatches");
+
+                    b.Navigation("HomeMatches");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

EntityFrameworkCore.Data/Migrations/20250407095737_AddRelationshipConstraints.cs

@@ -0,0 +1,472 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+#pragma warning disable CA1814 // Prefer jagged arrays over multidimensional
+
+namespace EntityFrameworkCore.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddRelationshipConstraints : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "TeamId",
+                table: "Coaches");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "LeagueId",
+                table: "Teams",
+                type: "INTEGER",
+                nullable: true,
+                oldClrType: typeof(int),
+                oldType: "INTEGER");
+
+            migrationBuilder.AddColumn<int>(
+                name: "AwayTeamScore",
+                table: "Matches",
+                type: "INTEGER",
+                nullable: false,
+                defaultValue: 0);
+
+            migrationBuilder.AddColumn<int>(
+                name: "HomeTeamScore",
+                table: "Matches",
+                type: "INTEGER",
+                nullable: false,
+                defaultValue: 0);
+
+            migrationBuilder.InsertData(
+                table: "Coaches",
+                columns: new[] { "Id", "CreatedBy", "CreatedDate", "ModifiedBy", "ModifiedDate", "Name" },
+                values: new object[,]
+                {
+                    { 1, null, new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified), null, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified), "Christian Southgate" },
+                    { 2, null, new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified), null, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified), "Rob Mann" },
+                    { 3, null, new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified), null, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified), "Jon Curtis" },
+                    { 4, null, new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified), null, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified), "Andy Taylor" },
+                    { 5, null, new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified), null, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified), "Steve Johnson" },
+                    { 6, null, new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified), null, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified), "Dan Cook" },
+                    { 7, null, new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified), null, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified), "Ken Jarvis" },
+                    { 8, null, new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified), null, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified), "Kenny Suzuki" },
+                    { 9, null, new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified), null, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified), "Gordon Hall" },
+                    { 10, null, new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified), null, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified), "John O Dowd" },
+                    { 11, null, new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified), null, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified), "Julian Widdows" },
+                    { 12, null, new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified), null, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified), "Andy Williams" },
+                    { 13, null, new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified), null, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified), "Trevor Williams" },
+                    { 14, null, new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified), null, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified), "Blake Deathray" },
+                    { 15, null, new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified), null, new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified), "Rock Housebrick" }
+                });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 1,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 1, 2 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 2,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 2, 1 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 3,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 3, 1 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 4,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 4, 3 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 5,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 5, 2 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 6,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 6, 2 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 7,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 7, 3 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 8,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 8, 3 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 9,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 9, 1 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 10,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 10, 1 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 11,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 11, 4 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 12,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 12, 1 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 13,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 13, 1 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 14,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 14, 4 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 15,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 15, 1 });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Teams_CoachId",
+                table: "Teams",
+                column: "CoachId",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Teams_LeagueId",
+                table: "Teams",
+                column: "LeagueId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Teams_Name",
+                table: "Teams",
+                column: "Name",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Matches_AwayTeamId",
+                table: "Matches",
+                column: "AwayTeamId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Matches_HomeTeamId",
+                table: "Matches",
+                column: "HomeTeamId");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Matches_Teams_AwayTeamId",
+                table: "Matches",
+                column: "AwayTeamId",
+                principalTable: "Teams",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Restrict);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Matches_Teams_HomeTeamId",
+                table: "Matches",
+                column: "HomeTeamId",
+                principalTable: "Teams",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Restrict);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Teams_Coaches_CoachId",
+                table: "Teams",
+                column: "CoachId",
+                principalTable: "Coaches",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Cascade);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Teams_Leagues_LeagueId",
+                table: "Teams",
+                column: "LeagueId",
+                principalTable: "Leagues",
+                principalColumn: "Id");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Matches_Teams_AwayTeamId",
+                table: "Matches");
+
+            migrationBuilder.DropForeignKey(
+                name: "FK_Matches_Teams_HomeTeamId",
+                table: "Matches");
+
+            migrationBuilder.DropForeignKey(
+                name: "FK_Teams_Coaches_CoachId",
+                table: "Teams");
+
+            migrationBuilder.DropForeignKey(
+                name: "FK_Teams_Leagues_LeagueId",
+                table: "Teams");
+
+            migrationBuilder.DropIndex(
+                name: "IX_Teams_CoachId",
+                table: "Teams");
+
+            migrationBuilder.DropIndex(
+                name: "IX_Teams_LeagueId",
+                table: "Teams");
+
+            migrationBuilder.DropIndex(
+                name: "IX_Teams_Name",
+                table: "Teams");
+
+            migrationBuilder.DropIndex(
+                name: "IX_Matches_AwayTeamId",
+                table: "Matches");
+
+            migrationBuilder.DropIndex(
+                name: "IX_Matches_HomeTeamId",
+                table: "Matches");
+
+            migrationBuilder.DeleteData(
+                table: "Coaches",
+                keyColumn: "Id",
+                keyValue: 1);
+
+            migrationBuilder.DeleteData(
+                table: "Coaches",
+                keyColumn: "Id",
+                keyValue: 2);
+
+            migrationBuilder.DeleteData(
+                table: "Coaches",
+                keyColumn: "Id",
+                keyValue: 3);
+
+            migrationBuilder.DeleteData(
+                table: "Coaches",
+                keyColumn: "Id",
+                keyValue: 4);
+
+            migrationBuilder.DeleteData(
+                table: "Coaches",
+                keyColumn: "Id",
+                keyValue: 5);
+
+            migrationBuilder.DeleteData(
+                table: "Coaches",
+                keyColumn: "Id",
+                keyValue: 6);
+
+            migrationBuilder.DeleteData(
+                table: "Coaches",
+                keyColumn: "Id",
+                keyValue: 7);
+
+            migrationBuilder.DeleteData(
+                table: "Coaches",
+                keyColumn: "Id",
+                keyValue: 8);
+
+            migrationBuilder.DeleteData(
+                table: "Coaches",
+                keyColumn: "Id",
+                keyValue: 9);
+
+            migrationBuilder.DeleteData(
+                table: "Coaches",
+                keyColumn: "Id",
+                keyValue: 10);
+
+            migrationBuilder.DeleteData(
+                table: "Coaches",
+                keyColumn: "Id",
+                keyValue: 11);
+
+            migrationBuilder.DeleteData(
+                table: "Coaches",
+                keyColumn: "Id",
+                keyValue: 12);
+
+            migrationBuilder.DeleteData(
+                table: "Coaches",
+                keyColumn: "Id",
+                keyValue: 13);
+
+            migrationBuilder.DeleteData(
+                table: "Coaches",
+                keyColumn: "Id",
+                keyValue: 14);
+
+            migrationBuilder.DeleteData(
+                table: "Coaches",
+                keyColumn: "Id",
+                keyValue: 15);
+
+            migrationBuilder.DropColumn(
+                name: "AwayTeamScore",
+                table: "Matches");
+
+            migrationBuilder.DropColumn(
+                name: "HomeTeamScore",
+                table: "Matches");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "LeagueId",
+                table: "Teams",
+                type: "INTEGER",
+                nullable: false,
+                defaultValue: 0,
+                oldClrType: typeof(int),
+                oldType: "INTEGER",
+                oldNullable: true);
+
+            migrationBuilder.AddColumn<int>(
+                name: "TeamId",
+                table: "Coaches",
+                type: "INTEGER",
+                nullable: true);
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 1,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 0, 0 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 2,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 0, 0 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 3,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 0, 0 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 4,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 0, 0 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 5,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 0, 0 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 6,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 0, 0 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 7,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 0, 0 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 8,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 0, 0 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 9,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 0, 0 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 10,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 0, 0 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 11,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 0, 0 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 12,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 0, 0 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 13,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 0, 0 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 14,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 0, 0 });
+
+            migrationBuilder.UpdateData(
+                table: "Teams",
+                keyColumn: "Id",
+                keyValue: 15,
+                columns: new[] { "CoachId", "LeagueId" },
+                values: new object[] { 0, 0 });
+        }
+    }
+}

EntityFrameworkCore.Data/Migrations/20250407174459_AddTeamLeaguesAndCoachesView.Designer.cs

@@ -0,0 +1,490 @@
+// <auto-generated />
+using System;
+using EntityFrameworkCore.Data;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace EntityFrameworkCore.Data.Migrations
+{
+    [DbContext(typeof(DeadBallZoneLeagueDbContext))]
+    [Migration("20250407174459_AddTeamLeaguesAndCoachesView")]
+    partial class AddTeamLeaguesAndCoachesView
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "9.0.3");
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Coach", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Coaches");
+
+                    b.HasData(
+                        new
+                        {
+                            Id = 1,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Christian Southgate"
+                        },
+                        new
+                        {
+                            Id = 2,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Rob Mann"
+                        },
+                        new
+                        {
+                            Id = 3,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Jon Curtis"
+                        },
+                        new
+                        {
+                            Id = 4,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Andy Taylor"
+                        },
+                        new
+                        {
+                            Id = 5,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Steve Johnson"
+                        },
+                        new
+                        {
+                            Id = 6,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Dan Cook"
+                        },
+                        new
+                        {
+                            Id = 7,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Ken Jarvis"
+                        },
+                        new
+                        {
+                            Id = 8,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Kenny Suzuki"
+                        },
+                        new
+                        {
+                            Id = 9,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Gordon Hall"
+                        },
+                        new
+                        {
+                            Id = 10,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "John O Dowd"
+                        },
+                        new
+                        {
+                            Id = 11,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Julian Widdows"
+                        },
+                        new
+                        {
+                            Id = 12,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Andy Williams"
+                        },
+                        new
+                        {
+                            Id = 13,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Trevor Williams"
+                        },
+                        new
+                        {
+                            Id = 14,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Blake Deathray"
+                        },
+                        new
+                        {
+                            Id = 15,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Rock Housebrick"
+                        });
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.League", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Leagues");
+
+                    b.HasData(
+                        new
+                        {
+                            Id = 1,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Local League"
+                        },
+                        new
+                        {
+                            Id = 2,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "National League"
+                        },
+                        new
+                        {
+                            Id = 3,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Geosphere"
+                        },
+                        new
+                        {
+                            Id = 4,
+                            CreatedDate = new DateTime(2025, 4, 6, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Cyber war"
+                        });
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Match", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("AwayTeamId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("AwayTeamScore")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("HomeTeamId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("HomeTeamScore")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<decimal>("TicketPrice")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AwayTeamId");
+
+                    b.HasIndex("HomeTeamId");
+
+                    b.ToTable("Matches");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Team", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("CoachId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("CreatedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("CreatedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int?>("LeagueId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("ModifiedBy")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("ModifiedDate")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CoachId")
+                        .IsUnique();
+
+                    b.HasIndex("LeagueId");
+
+                    b.HasIndex("Name")
+                        .IsUnique();
+
+                    b.ToTable("Teams");
+
+                    b.HasData(
+                        new
+                        {
+                            Id = 1,
+                            CoachId = 1,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 2,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Delhi"
+                        },
+                        new
+                        {
+                            Id = 2,
+                            CoachId = 2,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 1,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Voodoo"
+                        },
+                        new
+                        {
+                            Id = 3,
+                            CoachId = 3,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 1,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Penal X"
+                        },
+                        new
+                        {
+                            Id = 4,
+                            CoachId = 4,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 3,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Tokyo"
+                        },
+                        new
+                        {
+                            Id = 5,
+                            CoachId = 5,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 2,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Barcelona"
+                        },
+                        new
+                        {
+                            Id = 6,
+                            CoachId = 6,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 2,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Manchester"
+                        },
+                        new
+                        {
+                            Id = 7,
+                            CoachId = 7,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 3,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Bangkok"
+                        },
+                        new
+                        {
+                            Id = 8,
+                            CoachId = 8,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 3,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Neo Amsterdam"
+                        },
+                        new
+                        {
+                            Id = 9,
+                            CoachId = 9,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 1,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Killaklowns"
+                        },
+                        new
+                        {
+                            Id = 10,
+                            CoachId = 10,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 1,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Sol"
+                        },
+                        new
+                        {
+                            Id = 11,
+                            CoachId = 11,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 4,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "DEC"
+                        },
+                        new
+                        {
+                            Id = 12,
+                            CoachId = 12,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 1,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Leopards"
+                        },
+                        new
+                        {
+                            Id = 13,
+                            CoachId = 13,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 1,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Harlequins"
+                        },
+                        new
+                        {
+                            Id = 14,
+                            CoachId = 14,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 4,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Gladiators"
+                        },
+                        new
+                        {
+                            Id = 15,
+                            CoachId = 15,
+                            CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            LeagueId = 1,
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Fiz-O"
+                        });
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Match", b =>
+                {
+                    b.HasOne("EntityFrameworkCore.Domain.Team", "AwayTeam")
+                        .WithMany("AwayMatches")
+                        .HasForeignKey("AwayTeamId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("EntityFrameworkCore.Domain.Team", "HomeTeam")
+                        .WithMany("HomeMatches")
+                        .HasForeignKey("HomeTeamId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("AwayTeam");
+
+                    b.Navigation("HomeTeam");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Team", b =>
+                {
+                    b.HasOne("EntityFrameworkCore.Domain.Coach", "Coach")
+                        .WithOne("Team")
+                        .HasForeignKey("EntityFrameworkCore.Domain.Team", "CoachId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("EntityFrameworkCore.Domain.League", "League")
+                        .WithMany("Teams")
+                        .HasForeignKey("LeagueId");
+
+                    b.Navigation("Coach");
+
+                    b.Navigation("League");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Coach", b =>
+                {
+                    b.Navigation("Team");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.League", b =>
+                {
+                    b.Navigation("Teams");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Team", b =>
+                {
+                    b.Navigation("AwayMatches");
+
+                    b.Navigation("HomeMatches");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

EntityFrameworkCore.Data/Migrations/20250407174459_AddTeamLeaguesAndCoachesView.cs

@@ -0,0 +1,32 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace EntityFrameworkCore.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddTeamLeaguesAndCoachesView : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            // I added this SQL manually, by first creating an empty migration.
+            // A view is a read-only representation of a data set.
+            migrationBuilder.Sql(@"
+                CREATE VIEW vw_TeamsAndLeagues
+                AS
+                SELECT t.name, l.Name AS LeagueName
+                FROM Teams AS t
+                LEFT JOIN Leagues AS l ON t.LeagueId = l.Id
+            ");
+
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            // Don't forget this part as well, for each manually added SQL statement.
+            migrationBuilder.Sql(@"DROP VIEW vw_TeamsAndLeagues");
+        }
+    }
+}

EntityFrameworkCore.Data/Migrations/DeadBallZoneLeagueDbContextModelSnapshot.cs

@@ -42,6 +42,113 @@ namespace EntityFrameworkCore.Data.Migrations
                     b.HasKey("Id");
 
                     b.ToTable("Coaches");
+
+                    b.HasData(
+                        new
+                        {
+                            Id = 1,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Christian Southgate"
+                        },
+                        new
+                        {
+                            Id = 2,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Rob Mann"
+                        },
+                        new
+                        {
+                            Id = 3,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Jon Curtis"
+                        },
+                        new
+                        {
+                            Id = 4,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Andy Taylor"
+                        },
+                        new
+                        {
+                            Id = 5,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Steve Johnson"
+                        },
+                        new
+                        {
+                            Id = 6,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Dan Cook"
+                        },
+                        new
+                        {
+                            Id = 7,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Ken Jarvis"
+                        },
+                        new
+                        {
+                            Id = 8,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Kenny Suzuki"
+                        },
+                        new
+                        {
+                            Id = 9,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Gordon Hall"
+                        },
+                        new
+                        {
+                            Id = 10,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "John O Dowd"
+                        },
+                        new
+                        {
+                            Id = 11,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Julian Widdows"
+                        },
+                        new
+                        {
+                            Id = 12,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Andy Williams"
+                        },
+                        new
+                        {
+                            Id = 13,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Trevor Williams"
+                        },
+                        new
+                        {
+                            Id = 14,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Blake Deathray"
+                        },
+                        new
+                        {
+                            Id = 15,
+                            CreatedDate = new DateTime(2025, 4, 7, 17, 7, 27, 33, DateTimeKind.Unspecified),
+                            ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                            Name = "Rock Housebrick"
+                        });
                 });
 
             modelBuilder.Entity("EntityFrameworkCore.Domain.League", b =>
@@ -109,6 +216,9 @@ namespace EntityFrameworkCore.Data.Migrations
                     b.Property<int>("AwayTeamId")
                         .HasColumnType("INTEGER");
 
+                    b.Property<int>("AwayTeamScore")
+                        .HasColumnType("INTEGER");
+
                     b.Property<string>("CreatedBy")
                         .HasColumnType("TEXT");
 
@@ -121,6 +231,9 @@ namespace EntityFrameworkCore.Data.Migrations
                     b.Property<int>("HomeTeamId")
                         .HasColumnType("INTEGER");
 
+                    b.Property<int>("HomeTeamScore")
+                        .HasColumnType("INTEGER");
+
                     b.Property<string>("ModifiedBy")
                         .HasColumnType("TEXT");
 
@@ -132,6 +245,10 @@ namespace EntityFrameworkCore.Data.Migrations
 
                     b.HasKey("Id");
 
+                    b.HasIndex("AwayTeamId");
+
+                    b.HasIndex("HomeTeamId");
+
                     b.ToTable("Matches");
                 });
 
@@ -150,7 +267,7 @@ namespace EntityFrameworkCore.Data.Migrations
                     b.Property<DateTime>("CreatedDate")
                         .HasColumnType("TEXT");
 
-                    b.Property<int>("LeagueId")
+                    b.Property<int?>("LeagueId")
                         .HasColumnType("INTEGER");
 
                     b.Property<string>("ModifiedBy")
@@ -164,145 +281,206 @@ namespace EntityFrameworkCore.Data.Migrations
 
                     b.HasKey("Id");
 
+                    b.HasIndex("CoachId")
+                        .IsUnique();
+
+                    b.HasIndex("LeagueId");
+
+                    b.HasIndex("Name")
+                        .IsUnique();
+
                     b.ToTable("Teams");
 
                     b.HasData(
                         new
                         {
                             Id = 1,
-                            CoachId = 0,
+                            CoachId = 1,
                             CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
-                            LeagueId = 0,
+                            LeagueId = 2,
                             ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
                             Name = "Neo Delhi"
                         },
                         new
                         {
                             Id = 2,
-                            CoachId = 0,
+                            CoachId = 2,
                             CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
-                            LeagueId = 0,
+                            LeagueId = 1,
                             ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
                             Name = "Voodoo"
                         },
                         new
                         {
                             Id = 3,
-                            CoachId = 0,
+                            CoachId = 3,
                             CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
-                            LeagueId = 0,
+                            LeagueId = 1,
                             ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
                             Name = "Penal X"
                         },
                         new
                         {
                             Id = 4,
-                            CoachId = 0,
+                            CoachId = 4,
                             CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
-                            LeagueId = 0,
+                            LeagueId = 3,
                             ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
                             Name = "Neo Tokyo"
                         },
                         new
                         {
                             Id = 5,
-                            CoachId = 0,
+                            CoachId = 5,
                             CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
-                            LeagueId = 0,
+                            LeagueId = 2,
                             ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
                             Name = "Neo Barcelona"
                         },
                         new
                         {
                             Id = 6,
-                            CoachId = 0,
+                            CoachId = 6,
                             CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
-                            LeagueId = 0,
+                            LeagueId = 2,
                             ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
                             Name = "Neo Manchester"
                         },
                         new
                         {
                             Id = 7,
-                            CoachId = 0,
+                            CoachId = 7,
                             CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
-                            LeagueId = 0,
+                            LeagueId = 3,
                             ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
                             Name = "Neo Bangkok"
                         },
                         new
                         {
                             Id = 8,
-                            CoachId = 0,
+                            CoachId = 8,
                             CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
-                            LeagueId = 0,
+                            LeagueId = 3,
                             ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
                             Name = "Neo Amsterdam"
                         },
                         new
                         {
                             Id = 9,
-                            CoachId = 0,
+                            CoachId = 9,
                             CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
-                            LeagueId = 0,
+                            LeagueId = 1,
                             ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
                             Name = "Killaklowns"
                         },
                         new
                         {
                             Id = 10,
-                            CoachId = 0,
+                            CoachId = 10,
                             CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
-                            LeagueId = 0,
+                            LeagueId = 1,
                             ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
                             Name = "Sol"
                         },
                         new
                         {
                             Id = 11,
-                            CoachId = 0,
+                            CoachId = 11,
                             CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
-                            LeagueId = 0,
+                            LeagueId = 4,
                             ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
                             Name = "DEC"
                         },
                         new
                         {
                             Id = 12,
-                            CoachId = 0,
+                            CoachId = 12,
                             CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
-                            LeagueId = 0,
+                            LeagueId = 1,
                             ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
                             Name = "Leopards"
                         },
                         new
                         {
                             Id = 13,
-                            CoachId = 0,
+                            CoachId = 13,
                             CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
-                            LeagueId = 0,
+                            LeagueId = 1,
                             ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
                             Name = "Harlequins"
                         },
                         new
                         {
                             Id = 14,
-                            CoachId = 0,
+                            CoachId = 14,
                             CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
-                            LeagueId = 0,
+                            LeagueId = 4,
                             ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
                             Name = "Gladiators"
                         },
                         new
                         {
                             Id = 15,
-                            CoachId = 0,
+                            CoachId = 15,
                             CreatedDate = new DateTime(2025, 4, 4, 17, 7, 27, 33, DateTimeKind.Unspecified),
-                            LeagueId = 0,
+                            LeagueId = 1,
                             ModifiedDate = new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
                             Name = "Fiz-O"
                         });
                 });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Match", b =>
+                {
+                    b.HasOne("EntityFrameworkCore.Domain.Team", "AwayTeam")
+                        .WithMany("AwayMatches")
+                        .HasForeignKey("AwayTeamId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.HasOne("EntityFrameworkCore.Domain.Team", "HomeTeam")
+                        .WithMany("HomeMatches")
+                        .HasForeignKey("HomeTeamId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("AwayTeam");
+
+                    b.Navigation("HomeTeam");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Team", b =>
+                {
+                    b.HasOne("EntityFrameworkCore.Domain.Coach", "Coach")
+                        .WithOne("Team")
+                        .HasForeignKey("EntityFrameworkCore.Domain.Team", "CoachId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("EntityFrameworkCore.Domain.League", "League")
+                        .WithMany("Teams")
+                        .HasForeignKey("LeagueId");
+
+                    b.Navigation("Coach");
+
+                    b.Navigation("League");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Coach", b =>
+                {
+                    b.Navigation("Team");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.League", b =>
+                {
+                    b.Navigation("Teams");
+                });
+
+            modelBuilder.Entity("EntityFrameworkCore.Domain.Team", b =>
+                {
+                    b.Navigation("AwayMatches");
+
+                    b.Navigation("HomeMatches");
+                });
 #pragma warning restore 612, 618
         }
     }

EntityFrameworkCore.Domain/Coach.cs

@@ -3,5 +3,6 @@
 public class Coach : BaseDomainModel
 {
   public string Name { get; set; } // Strings are automatically become VARCHAR database types.
+  public Team? Team { get; set; }
 }
 

EntityFrameworkCore.Domain/League.cs

@@ -3,4 +3,5 @@
 public class League : BaseDomainModel
 {
   public string? Name { get; set; }
+  public List<Team> Teams { get; set; } = new List<Team>() { };
 }

EntityFrameworkCore.Domain/Match.cs

@@ -2,8 +2,12 @@
 
 public class Match : BaseDomainModel
 {
+  public Team HomeTeam { get; set; }
   public int HomeTeamId { get; set; }
+  public int HomeTeamScore { get; set; }
+  public Team AwayTeam { get; set; }
   public int AwayTeamId { get; set; }
+  public int AwayTeamScore { get; set; }
   public decimal TicketPrice { get; set; }
   public DateTime Date { get; set; }
 }

EntityFrameworkCore.Domain/Team.cs

@@ -3,6 +3,10 @@
 public class Team : BaseDomainModel
 {
   public string? Name { get; set; }
-  public int LeagueId { get; set; }
+  public League? League { get; set; }
+  public int? LeagueId { get; set; }
+  public Coach Coach { get; set; }
   public int CoachId { get; set; }
+  public List<Match> HomeMatches { get; set; } = new List<Match>() { };
+  public List<Match> AwayMatches { get; set; } = new List<Match>() { };
 }

EntityFrameworkCore.Domain/TeamsAndLeaguesView.cs

@@ -0,0 +1,7 @@
+namespace EntityFrameworkCore.Domain;
+
+public class TeamsAndLeaguesView
+{
+  public string? Name { get; set; }
+  public string? LeagueName { get; set; }
+}

README.md

@@ -31,6 +31,10 @@ Create a migration, inside of the Console project, referring to the Data project
 
 `dotnet ef migrations add InitialMigration --startup-project ./ --project ../EntityFrameworkCore.Data`
 
+Show migration status (`Get-Migration` has more details):
+
+`dotnet ef migrations list --startup-project ./ --project ../EntityFrameworkCore.Data`
+
 Update the database:
 
 `dotnet ef database update --startup-project ./ --project ../EntityFrameworkCore.Data`
@@ -51,6 +55,12 @@ Create migration script (This generates SQL of all the migrations). Add the `--i
 
 `dotnet ef migrations script --startup-project ./ --project ../EntityFrameworkCore.Data`
 
+Rollback to specific migration, use `list` command to see (Pending) changes:
+
+`dotnet ef database update 20250406180432_AddMatchAndLeagueEntities --startup-project ./ --project ../EntityFrameworkCore.Data`
+
+To re-apply changes again, simply do a `database update` again. Beware that data will be lost.
+
 ## Links
 
 * [Entity Framework - Database providers](https://learn.microsoft.com/en-us/ef/core/providers/?tabs=dotnet-core-cli)
@@ -111,4 +121,34 @@ The following states are tracked in the `EntityState.State` property:
 * **Modified**: changes are made to the entity.
 * **Deleted**: the entity is in the database, but is marked for deletion.
 
-The `Find` functions require tracking, instead, use the `First` function, with a lambda for the ID.
+The `Find` functions require tracking, instead, use the `First` function, with a lambda for the ID.
+
+### Loading types
+
+Entity Framework Core has 3 common loading patterns.
+
+* **Eager loading**: related data is loaded from the database as part of the initial query.
+* **Explicit loading**: related data is explicitly loaded from the database later.
+* **Lazy loading**: related data is loaded from the database accessing navigation property.
+
+#### Eager loading
+
+Uses the `include()` function to load related data in a query. The eager loading of a collection navigation may cause a performance issue, use `AsSplitQuery()` as needed to boost performance with large data sets. The `include()` function allows the `Where()` function to be used for filtering. If *tracking* is enabled, then the filter may return *incorrect* data, because it returns tracked records. Data may already be updated in the database, while the application is still using tracked data. Use the `ThenInclude()` function to get more dependencies. 
+
+### Explicit loading
+
+Data can be explicitly loaded by executing a separate query that returns related entities. If *tracking* is enabled, the navigation properties of the newly loaded entity will refer to any entities already loaded.
+
+### Lazy loading
+
+This is the least recommended method of loading data. It requires the [Microsoft.EntityFrameworkCore.Proxies](https://www.nuget.org/packages/Microsoft.EntityFrameworkCore.Proxies/9.0.3) package. It must then be enabled in the DbContext configuration with `UseLazyLoadingProxies()`. Navigation properties must be virtual. It can cause extra database roundtrips, causing the [N+1 problem](https://docs.sentry.io/product/issues/issue-details/performance-issues/n-one-queries/).
+
+## Database
+
+### Relationships
+
+* A **League** has one or more **Teams** (1:M)
+* A **Team** has one **Coach** (1:1)
+* **Matches** are played by many **Teams** (M:M)
+
+You can use [EF Core Power Tools](https://marketplace.visualstudio.com/items?itemName=ErikEJ.EFCorePowerTools) to create diagrams.