Jodi Kanter wrote:
> I have a linking table that has only two fields in it and both are
> foreign keys to other tables. I'd like to ensure that there are never
> any duplicate rows in this table. I was planning on creating a
> multi-column unique index to satisfy this requirement. Is there a
> more appropriate way to accomplish this or am I on the right track?>
In "linking tables" you should usually make the entire set of columns
the primary key. This would solve your problem.
--
Peter Eisentraut
http://developer.postgresql.org/~petere/