Additions to the default call class (Database)
 partial void Deletecall(call instance);
 partial void Updatecall(call instance);
		private void detach_calls1(call entity)
		{
			this.SendPropertyChanging();
			entity.person1 = null;
		}
 partial void Insertcall(call instance);
		private void attach_calls1(call entity)
		{
			this.SendPropertyChanging();
			entity.person1 = this;
		}