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Separate PK in Jxn Tbl?
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 |
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