Re: Entity vs. Table
From: Laconic2 <laconic2_at_comcast.net>
Date: Mon, 14 Jun 2004 23:03:26 -0400
Message-ID: <lbKdnYIofoM5-1PdRVn-jA_at_comcast.com>
> For instance you have to create an index if you want an alternate key
> constraint.
Date: Mon, 14 Jun 2004 23:03:26 -0400
Message-ID: <lbKdnYIofoM5-1PdRVn-jA_at_comcast.com>
"Alfredo Novoa" <alfredo_at_ncs.es> wrote in message news:40cdde24.28490266_at_news.wanadoo.es... .
>
> For instance you have to create an index if you want an alternate key
> constraint.
Not in all DBMSes, you don't. Of course, your constraint checking might run a little slow... Received on Tue Jun 15 2004 - 05:03:26 CEST