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   RE: [xml-dev] XQuery and DTD/Schema?

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Thanks. Just what I was looking for.

Yes, "brushed aside" had an unintended incendiary effect. That was not my
intent, but I am guilty as charged.

I can accept "unashamedly political."

Type assignment will likely be a high priority for RELAX NG 2.0. I suspect
it will be presented as a modular spec.


> -----Original Message-----
> From: Michael Kay [mailto:michael.h.kay@ntlworld.com]
> Sent: Wednesday, July 03, 2002 7:55 AM
> To: 'Michael Fitzgerald'; 'Betty Harvey'; xml-dev@lists.xml.org
> Subject: RE: [xml-dev] XQuery and DTD/Schema?
> > I am looking for a technical, non-political reason why RELAX
> > NG has been brushed aside by XQuery.
> >
> > Any XQuery people want to speak to that?
> (a) RELAX NG has not been brushed aside: that term would imply a
> deliberate rejection. As far as I know, no proposal to support RELAX NG
> has ever been considered by the working group.
> (b) The major reasons why XQuery is being aligned with XML Schema are
> unashamedly political (in the sense of "policy-driven") rather than
> technical. W3C is trying to develop a coherent set of related
> specifications for the web. There is no need to apologize for that.
> (c) There is however a technical reason why it would be difficult for
> XQuery to integrate with RELAX NG: namely, that RELAX NG simply provides
> a yes-or-no answer that says a document is or is not valid, it does not
> provide any find-grained type information that can be exploited by a
> query system. This might not be an insuperable barrier, but it would
> certainly require extra work on the semantics of RELAX NG.
> Michael Kay
> Software AG
> home: Michael.H.Kay@ntlworld.com
> work: Michael.Kay@softwareag.com
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