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Re: definitions of queries vs. rules

From: <jos.deroo.jd@belgium.agfa.com>
Date: Sat, 8 Sep 2001 11:49:17 +0100
To: pfps@research.bell-labs.com
Cc: eric@w3.org, www-rdf-rules@w3.org
Message-Id: <OF205E942E.4463D9B4-ON41256AC1.003ABCA0@bayer-ag.com>

Peter F. Patel-Schneider wrote:
> I worry that there are things in queries that should not be in rules.
> Consider DB query systems like (gasp) SQL.  Do we want all the baggage of
> something like SQL in the antecedants of rules?  Do we even want everything
> in a cleaner rule algebra in the antecedants of rules?

Peter, do you have an example of such a clean rule algebra?

> On the other hand, I applaud the limitation of the ``right-hand side'' of
> rules to assertions.  I would worry a whole lot more if rules in
> representational systems could perform arbitrary actions in their
> ``right-hand side''.

fully agreed with that!

--
Jos De Roo, AGFA http://www.agfa.com/w3c/jdroo/
Received on Saturday, 8 September 2001 05:49:28 GMT

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