Separate PK in Jxn Tbl?
From: Neil <nospam_at_nospam.net>
Date: Tue, 22 Jan 2008 20:26:42 GMT
Message-ID: <6kslj.128$J41.113@newssvr14.news.prodigy.net>
Date: Tue, 22 Jan 2008 20:26:42 GMT
Message-ID: <6kslj.128$J41.113@newssvr14.news.prodigy.net>
Whenever I've created junction tables in the past, I always made the PK of
the junction table the combined pks from the two other tables. Ex: Table1
PK=A; Table2 PK=B; Junction table consists of two fields, A and B, which
together comprise the PK for the junction table.
However, I just came across some code in which the person created a junction table with a separate PK consisting of an autonumber field, and then the two fields.
So I was wondering how others did junction tables -- with a standalone autonumber PK, or with a PK consisting of the PKs of the tables being joined? And, if a standalone PK, then why?
Thanks!
Neil Received on Tue Jan 22 2008 - 14:26:42 CST