X-Original-To: pgsql-sql-postgresql.org@postgresql.org Received: from localhost (wm.hub.org [200.46.204.128]) by postgresql.org (Postfix) with ESMTP id 799269FC5B6 for ; Sun, 27 Aug 2006 11:40:01 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.128]) (amavisd-new, port 10024) with ESMTP id 06444-03-2 for ; Sun, 27 Aug 2006 14:39:58 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey- Received: from web31812.mail.mud.yahoo.com (web31812.mail.mud.yahoo.com [68.142.207.75]) by postgresql.org (Postfix) with SMTP id 3649B9FC5C4 for ; Sun, 27 Aug 2006 11:39:52 -0300 (ADT) Received: (qmail 16263 invoked by uid 60001); 27 Aug 2006 14:39:49 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Received:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=gcZ7gmGWbUAPktGt1a9t2tjFPaBDU/e3slNPRyBBWRXpFgFPLJvuy3vJCNIlAjPVjcDD+T58xwoxRCXGSX7XZlNcQGQs3Ek7Lgxd/3YudILzBS/g7dXNXQFr/u9ceG7Uas9SO8djkbr7en7bzX75j1ZmCoVG9yTgIgyDOOng06w= ; Message-ID: <20060827143949.16261.qmail@web31812.mail.mud.yahoo.com> Received: from [24.54.196.198] by web31812.mail.mud.yahoo.com via HTTP; Sun, 27 Aug 2006 07:39:49 PDT Date: Sun, 27 Aug 2006 07:39:49 -0700 (PDT) From: Richard Broersma Jr Subject: Re: Create Assertion -- Question from a newbie To: Bruno Wolff III Cc: SQL Postgresql List In-Reply-To: <20060827135437.GA1869@wolff.to> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=3.355 tagged_above=0 required=5 tests=DNS_FROM_RFC_ABUSE, DNS_FROM_RFC_POST, DNS_FROM_RFC_WHOIS X-Spam-Level: *** X-Archive-Number: 200608/208 X-Sequence-Number: 26166 > You can accomplish what assertions do using triggers. > I think the issue is generating triggers for general assertions that don't > totally suck performancewise. Ah, I see. So the points is that checking the integrity between two complete data sets can become a preformace killer. Thanks for the feed back. Regards, Richard Broersma Jr.