will foreign key improve select query performance

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To: pgsql-php@xxxxxxxxxxxxxx
Subject: will foreign key improve select query performance
From: "petchimuthu lingam" <spmlingam@xxxxxxxxx>
Date: Fri, 7 Mar 2008 09:48:44 +0530
Sender: pgsql-php-owner@xxxxxxxxxxxxxx

If i create foreign key references, whether it will improve the performance in the select query?

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With Best Regards,
Petchimuthulingam S

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