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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