how to annotate a parent-child relationship with Code-First

Question

When using the CTP 5 of Entity Framework code-first library (as announced here) I\'m trying to create a class that maps to a very simple hierarchy table.

Here\'s the SQL

Answer 1

    class Person
{ 
    [key()]
    public Guid Id { get; set; }
    public String Name { get; set; }
    [ForeignKey("Children")]
    public int? PersonId {get; set;} //Add ForeignKey
    public virtual Person Parent { get; set; }
    public virtual ICollection Children { get; set; }
}

builder.Entity().HasMany(m => m.Children)
                        .WithOne(m => m.Parent)
                        .HasForeignKey(m => m.PersonId);