Add restrictions in configuration and data annotations.

EntityFrameworkCore.Data/Configurations/TeamConfiguration.cs

@@ -10,6 +10,11 @@ public class TeamConfiguration : IEntityTypeConfiguration<Team>
   {
     builder.HasIndex(t => t.Name).IsUnique();
 
+    // example composite key configuration.
+    // builder.HasIndex(λ => new { λ.CoachId, λ.LeagueId }).IsUnique();
+
+    builder.Property(λ => λ.Name).HasMaxLength(100).IsRequired();
+
     builder.HasMany(m => m.HomeMatches) // A team has many home matches.
       .WithOne(m => m.HomeTeam) // Mapped to the HomeTeam property.
       .HasForeignKey(m => m.HomeTeamId)

EntityFrameworkCore.Data/Migrations/DeadBallZoneLeagueDbContextModelSnapshot.cs

@@ -37,6 +37,7 @@ namespace EntityFrameworkCore.Data.Migrations
 
                     b.Property<string>("Name")
                         .IsRequired()
+                        .HasMaxLength(100)
                         .HasColumnType("TEXT");
 
                     b.HasKey("Id");
@@ -277,6 +278,8 @@ namespace EntityFrameworkCore.Data.Migrations
                         .HasColumnType("TEXT");
 
                     b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(100)
                         .HasColumnType("TEXT");
 
                     b.HasKey("Id");
@@ -429,6 +432,19 @@ namespace EntityFrameworkCore.Data.Migrations
                         });
                 });
 
+            modelBuilder.Entity("EntityFrameworkCore.Domain.TeamsAndLeaguesView", b =>
+                {
+                    b.Property<string>("LeagueName")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("TEXT");
+
+                    b.ToTable((string)null);
+
+                    b.ToView("vw_TeamsAndLeagues", (string)null);
+                });
+
             modelBuilder.Entity("EntityFrameworkCore.Domain.Match", b =>
                 {
                     b.HasOne("EntityFrameworkCore.Domain.Team", "AwayTeam")

EntityFrameworkCore.Domain/Coach.cs

@@ -1,7 +1,11 @@
-namespace EntityFrameworkCore.Domain;
+using System.ComponentModel.DataAnnotations;
+
+namespace EntityFrameworkCore.Domain;
 // Since C#11, you do not need to wrap in accolades anymore.
 public class Coach : BaseDomainModel
 {
+  [MaxLength(100)]
+  [Required]
   public string Name { get; set; } // Strings are automatically become VARCHAR database types.
   public Team? Team { get; set; }
 }