Entity Framework: How to avoid Discriminator column from table?

Question

I have the following table created using Entity Framework Code First approach.

1. How do I modify the C# code so that the unwanted Discriminato

Answer 1

Sample code to remove Discriminator column and get column named PaymentId as discriminator instead, therefore solving both your questions. Based on Microsofts Fluent Api original documentation.

https://msdn.microsoft.com/en-us/library/jj591617%28v=vs.113%29.aspx?f=255&MSPPError=-2147217396

public enum MyEnum
{ 
    Value1, Value2
}

public class MyBaseClass

{ 
    [NotMapped]
    public MyEnum PaymentId { get; protected set; }
}

public class DerivedOne: MyBaseClass
{
    public DerivedOne()
    {
        PaymentId = MyEnum.Value1;
    } 
}

public class DerivedTwo: MyBaseClass
{
    public DerivedTwo()
    {
        PaymentId = MyEnum.Value2;
    }
}

public class MyDbContext : DbContext
{
    DbSet MyBaseClass { get; set; }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);

        modelBuilder.Entity()
            .Map(x => x.Requires("PaymentId").HasValue((int)PaymentId.Value1))
            .Map(x => x.Requires("PaymentId").HasValue((int)PaymentId.Value2));
    }
}