Re: Transitive Closure
From: Paul <paul_at_test.com>
Date: Fri, 14 May 2004 19:45:47 +0100
Message-ID: <ot8pc.4469$NK4.376363_at_stones.force9.net>
>
> That statement goes a little bit too far. TC output still belongs to
> relational universe, of course.
Date: Fri, 14 May 2004 19:45:47 +0100
Message-ID: <ot8pc.4469$NK4.376363_at_stones.force9.net>
Vadim Tropashko wrote:
> Mikito Harakiri wrote:
>> From bigger perspective, it looks more than just a minor limitation. It's >> breaking relational closure.
>
> That statement goes a little bit too far. TC output still belongs to
> relational universe, of course.
It's like the "square root" function on the real numbers. Just because it's undefined for negative numbers doesn't make it any less of a real function.
Or the "inverse" function being undefined for zero.
Paul. Received on Fri May 14 2004 - 20:45:47 CEST