Re: A Simple Notation

From: David Cressey <cressey73_at_verizon.net>
Date: Tue, 10 Jul 2007 14:38:07 GMT
Message-ID: <jRMki.10276$t05.5755@trndny09>

"Brian Selzer" <brian_at_selzer-software.com> wrote in message news:hGLki.45816$5j1.18058_at_newssvr21.news.prodigy.net...

> By the definition of a natural join, there can only be one relationship.
In
> order for a tuple to appear in the result, there must be value agreement
for
> *all* common attributes in the tuples from the operands.

Agreed. But the fact that common attributes are discovered via common names is surely a setback (IMO). I expect that Bob's tip about D&D's RENAME will get me out of the woods on this score. Received on Tue Jul 10 2007 - 09:38:07 CDT