Entity Framework 4.1 Code First Foreign Key Id's

Question

I have two entities referenced one to many. When entity framework created the table it creates two foreign keys, one for the key I have specified with the fluent interface and t

Answer 1

You must specify the many-end of the association explicitely:

modelBuilder.Entity()
    .HasRequired(p => p.Department)
    .WithMany(d => d.People)
    .HasForeignKey(p => p.DepartmentId)
    .WillCascadeOnDelete(false);

Otherwise EF will assume that there are two associations: One which is not exposed in Department with the foreign key DepartmentId and navigation property Department in the Person class as you have defined in the Fluent code - and another association which belongs to the exposed navigation property People but with another not exposed end in Person and a foreign key automatically created by EF. That's the other key you see in the database.