Question

Is it possible to have child objects on RIA Services entities that are also entities themselves?

public class Project
{
    [Key]
    public int ID { get; set; }

    [Editable(false)]
    public String Name { get; set; }

    public Machine Machine { get; set; }
}

public class Machine
{
    [Key]
    public int ID { get; set; }

    [Editable(false)]
    public String Name { get; set; }
}

Answer 1

I don’t think so, at least not in the traditional sense.