[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Restrictions on existence of attributes?
> Weren't such corner cases caused by a lack of formal > underpinning and complexity of XSD spec? Complexity, yes. Lack of formal underpinning, no. I don't think one can argue that Relax-NG has stronger formal underpinning than XSD has. For the rule in question, there is no ambiguity in the specification. In fact the rule is very simple. It's just very easy to miss it, given the astonishing complexity (one might say, formality) of the overall rules for handling referential integrity constraints (which, as far as I can tell, have no parallel in RELAX-NG). I'm surprised though that Xerces doesn't catch violations of this particular rule: it's normally very conformant. Michael Kay http://www.saxonica.com/
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