Re: constraint question

From: Jan Gelbrich <j_gelbrich_at_westfalen-blatt.de>
Date: Mon, 9 Sep 2002 08:54:35 +0200
Message-ID: <alhgpe$1opmef$1@ID-152732.news.dfncis.de>

"eugene kim" <eugene1977_at_hotmail.com> schrieb im Newsbeitrag news:alhbip$pok$1_at_newsreader.mailgate.org...
> thanks for helps..
>
> but then
> is it a good idea to have unique constraint for all columns for each table
>

It just depends how You want to design the data model. An all-column unique constraint would only be necessary if You really want _all combinations_ to be unique.
Is this the case ?

Jan Received on Mon Sep 09 2002 - 01:54:35 CDT