Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Usenet -> comp.databases.theory -> Re: circular relationships ok?

Re: circular relationships ok?

From: vc <boston103_at_hotmail.com>
Date: 3 Mar 2006 06:54:55 -0800
Message-ID: <1141397694.943802.23190@t39g2000cwt.googlegroups.com>

Brian Selzer wrote:

>[...]

> if a and b are values
> for A and B respectively in a tuple of R, a implies b and b implies a,
> therefore, a iff b.

That does not make any obvious sense. What do you mean by '[value] a implies [value] b' ? Are you considering only the Boolean domain ?

Neither does that:

[...]

>...for any set of values, a, b and c for A, B, and C respectively,

>
> a implies b, b implies c and c implies a.
>

[...] Received on Fri Mar 03 2006 - 08:54:55 CST

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US