Quoth Fadhel Al-Hashim <fad...@gmail.com>, on 2010-10-02 15:15:29 +0300:
> I did not add indices on those columns assuming that being PK is enough? is
> that right?

Are you saying _both_ tables have that exact set of columns (ideally
in the same order, too) as their respective primary keys?

A primary key declaration implicitly creates a unique index, yes.

   ---> Drake Wilson
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