gistfile1.cs

public class PersonMap : EntityTypeConfiguration
 {
   public PersonMap()
   {
     // Primary Key
     this.HasKey(t => t.PersonId);

     this.ToTable("Person");
     // Relationships
     this.HasMany(t => t.Orders)
      .WithRequired()
      .HasForeignKey(t => t.PersonId);

     this.Ignore(t => t.Preferences);
   }
 }

public class OrderMap : EntityTypeConfiguration
 {
   public OrderMap()
   {
     // Primary Key
     this.HasKey(t => t.OrderId);
   }
 }

public class PreferenceMap : EntityTypeConfiguration
 {
   public PreferenceMap()
   {
     // Primary Key
     this.HasKey(t => t.PreferenceId);
   }
 }