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RE: XQuery and DTD/Schema?

• To: <michael.h.kay@n...>
• Subject: RE: XQuery and DTD/Schema?
• From: "Michael Fitzgerald" <mike@w...>
• Date: Wed, 3 Jul 2002 08:26:22 -0700
• Cc: "xml-dev" <xml-dev@l...>
• Importance: Normal
• In-reply-to: <005901c222a1$9deed7f0$6401a8c0@pcukmka>

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.

Mike

> -----Original Message-----
> From: Michael Kay [mailto:michael.h.kay@n...]
> Sent: Wednesday, July 03, 2002 7:55 AM
> To: 'Michael Fitzgerald'; 'Betty Harvey'; xml-dev@l...
> Subject: RE:  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@n...
> work: Michael.Kay@s...
>
>
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• References:
  • RE: XQuery and DTD/Schema?
    • From: "Michael Kay" <michael.h.kay@n...>

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