Received: from localhost (unknown [200.46.204.183]) by developer.postgresql.org (Postfix) with ESMTP id B3D742E0033 for ; Mon, 16 Jun 2008 08:25:33 -0300 (ADT) Received: from developer.postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 56531-01 for ; Mon, 16 Jun 2008 08:25:17 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from gauss.credativ.com (gauss.credativ.com [212.112.227.254]) by developer.postgresql.org (Postfix) with ESMTP id C682E2E002C for ; Mon, 16 Jun 2008 08:25:21 -0300 (ADT) Received: from hawking.credativ.lan (exit.credativ.com [87.139.82.80]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by gauss.credativ.com (Postfix) with ESMTP id AF1067750F; Mon, 16 Jun 2008 13:25:19 +0200 (CEST) From: Peter Eisentraut To: pgsql-admin@postgresql.org Subject: Re: What is the difference between Logical link and Foreign Key link in Postgresql Date: Mon, 16 Jun 2008 13:25:12 +0200 User-Agent: KMail/1.9.9 Cc: "Suresh Gupta VG" References: <3D5445983859B84B92669C0D883EA6FB0E0F0B92@ZENMAILHQ1.ind.zensar.com> In-Reply-To: <3D5445983859B84B92669C0D883EA6FB0E0F0B92@ZENMAILHQ1.ind.zensar.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200806161325.13787.peter_e@gmx.net> X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200806/126 X-Sequence-Number: 29464 Am Montag, 16. Juni 2008 schrieb Suresh Gupta VG: > Can any one explain me what is the difference between logical link and > foreign key link between the tables in postgresql. PostgreSQL has no concept by the name of logical link. What are you refering to?