On 14 aug, 20:00, beginner16 <kaja_love..._at_yahoo.com> wrote:
>
>
> And that is what is confusing me the most --> we can make real world
> objects ( which we could consider weak ) strong by just adding some
> attribute and making that attribute primary key.
You could, but then you would be no longer just modeling, but
implementing. The conceptual model is supposed to model the view of
the user(s) of the involved data. If you are adding an atribute that
was not already explicitly or implicitly in that view then your
conceptual model is strictly speaking not correct.
Received on Thu Aug 16 2007 - 01:32:34 CDT
