Re: Clean Object Class Design -- What is it?

From: Bob Badour <bbadour_at_golden.net>
Date: Sat, 21 Jul 2001 22:57:55 -0400
Message-ID: <brr67.34$Sc.10563736@radon.golden.net>

bok wrote in message <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?

Well, for a start, one cannot use the same OID 'value' to identify multiple things, and most systems do not treat them symmetrically. Received on Sat Jul 21 2001 - 21:57:55 CDT