Add models for BaseDomainModel, Coach and Team.

EntityFrameworkCore.Domain/BaseDomainModel.cs

@@ -0,0 +1,6 @@
+namespace EntityFrameworkCore.Domain;
+// Since C#11, you do not need to wrap in accolades anymore.
+public abstract class BaseDomainModel
+{
+  public DateTime CreatedDate { get; set;}
+}

EntityFrameworkCore.Domain/Class1.cs

@@ -1,6 +0,0 @@
-namespace EntityFrameworkCore.Domain;
-
-public class Class1
-{
-
-}

EntityFrameworkCore.Domain/Coach.cs

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+namespace EntityFrameworkCore.Domain;
+// Since C#11, you do not need to wrap in accolades anymore.
+public class Coach : BaseDomainModel
+{
+  public int Id { get; set; } // Anything called "Id" is automatically a Primary Key.
+  public string Name { get; set; } // Strings are automatically become VARCHAR database types.
+}
+

EntityFrameworkCore.Domain/Team.cs

@@ -0,0 +1,7 @@
+namespace EntityFrameworkCore.Domain;
+// Since C#11, you do not need to wrap in accolades anymore.
+public class Team : BaseDomainModel
+{
+  public int TeamId { get; set;} // This naming convention also allows EF to see this as a PK.
+  public string? Name { get; set; }
+}