Best practice for adding a bidirectional relation in OO model

Question

I\'m struggling to come up with a good way of adding a bidirectional relation in OO model. Let\'s say there is a Customer who can place many Orders, that is to say there is a on

Answer 1

There is no single answer. It really depends on the classes involved. In your case, you obviously don't want to give people the option of doing something invalid so I would get rid of Order.SetCustomer.

That may not always be the case though. Like I said, it depends on the classes involved.