• From: "Arnold, Curt" <Curt.Arnold@h...>
• To: "'xml-dev@l...'" <xml-dev@l...>
• Date: Tue, 16 Jan 2001 10:02:32 -0700

If you were trying to simplify the implementation of schema processors by eliminating XPath, you would have to throw out <xsd:unique> also.

If you have to have XPath in schema, I would suggest that it be made useful by adding an <xsd:prohibit> or <xsd:check> constraint (see
http://lists.w3.org/Archives/Public/www-xml-schema-comments/2000JulSep/0010.html).  It appears that you are able to write kludgy <xsd:unique> constraints that effectively prohibit a specific pattern,
such as attribute cocurrence.  Since that was an oft requested feature, if it can be kludged it with uniques, we could give rise to our own equivalent of 1-pixel GIF's.

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