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We're looking at this, but have only just started. I currently think that
identity constraints are the only constraint that prevents evaluation of a
subtree within a document, and these could be checked separately. That
would imply an XML Schema processor that does everything but the identity
constraints, and another means of checking these.
Also, static typing of updates has definite advantages.
But this is all work in progress....
At 06:04 AM 1/29/2002 -0800, Brian Vickery wrote:
>How would an XMLSchema be used to validate an update elements/attributes/
>and/or values during an XUpdate XPath expression? Since an XMLSchema is
>associated with a "document" and not a fragment of a document, does this
>imply one must retrieve the complete document and not just the fragment to
>do validation before actually updating the fragment? This could be