Re: foundations of relational theory?
From: Andrew McAuley <amcauley_notreally_at_sprezzatura.com>
Date: Fri, 31 Oct 2003 17:34:09 +0000 (UTC)
Message-ID: <bnu6eh$ec5$1_at_titan.btinternet.com>
Date: Fri, 31 Oct 2003 17:34:09 +0000 (UTC)
Message-ID: <bnu6eh$ec5$1_at_titan.btinternet.com>
"Mikito Harakiri" <mikharakiri_at_iahu.com> wrote in message news:v0xob.18$T3.34_at_news.oracle.com...
> Did I made substitution correctly? I don't think I'm able to make any
sence
> out of the second part telling something about domain level constraints.
No but thank you for trying to clarify.
In the original I would use a derived column. In your replacement I would use a domain constraint. Received on Fri Oct 31 2003 - 18:34:09 CET