Re: more closed-world chatter
From: Marshall <marshall.spight_at_gmail.com>
Date: 6 May 2007 10:11:15 -0700
Message-ID: <1178471475.364868.156500_at_y5g2000hsa.googlegroups.com>
Date: 6 May 2007 10:11:15 -0700
Message-ID: <1178471475.364868.156500_at_y5g2000hsa.googlegroups.com>
On May 6, 9:49 am, paul c <toledobythe..._at_oohay.ac> wrote:
>
> Not to distract my betters on this topic, but I guess I should have
> originally mentioned that I think the D&D stipulation "It is required
> that if <A,T1> is in Hr1 and <A,T2> is in Hr2, then T1 = T2" could be
> gotten around simply by ensuring that no two relvars have such an
> attribute. This would be easy for a "catalog" to enforce.
Marshall Received on Sun May 06 2007 - 19:11:15 CEST