Re: Examples for one-to-one associations?
From: Erwin <e.smout_at_myonline.be>
Date: Tue, 8 Jun 2010 06:48:51 -0700 (PDT)
Message-ID: <83f8d0c5-d3d2-44d3-82f6-303e70e090fc_at_a30g2000yqn.googlegroups.com>
Date: Tue, 8 Jun 2010 06:48:51 -0700 (PDT)
Message-ID: <83f8d0c5-d3d2-44d3-82f6-303e70e090fc_at_a30g2000yqn.googlegroups.com>
On 7 jun, 20:05, Nilone <rea..._at_gmail.com> wrote:
> On Jun 5, 12:33 pm, Karsten Wutzke <kwut..._at_web.de> wrote:
>
>
> Instead, unique constraints and
> referential constraints on relations can express logical requirements
> precisely and sufficiently.
This reply just to suggest that it might be better if the world learnt to talk just of "database constraints", of which both 'uniqueness constraints' and 'referential constraints' are merely a very small subset.
After all, we do now live in a world in which it has recently (cosmological timescale) become possible to enforce just any arbitrary database constraint efficiently.
Ego dixi. Received on Tue Jun 08 2010 - 15:48:51 CEST