Re: Clean Object Class Design -- What is it?
From: bok <bok_at_free.net.nz>
Date: Sat, 21 Jul 2001 14:01:49 +1200
Message-ID: <3b58e1df_at_clear.net.nz>
Date: Sat, 21 Jul 2001 14:01:49 +1200
Message-ID: <3b58e1df_at_clear.net.nz>
> OIDs, unlike PKs, they are not values, but pointers. Logical ones, but
> pointers nevertheless, with all the drawbacks.
Excuse me for butting in, but....
In a logical model an OID is a value (who says it's a pointer?), in the physical model it could be a pointer or something completely different. In what fundamental manner does an 'object identifier' differ from a 'primary key' in the relational model? Received on Sat Jul 21 2001 - 04:01:49 CEST