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That Wadler/Simeon paper mentioned on XMLHACK today, titled "The Essense of XML"[1] is a draft, so I would not criticize it, but it is interesting that the title makes you think it is about XML, the abstract speaks about it as a formalization of XML Schemas, but the text makes it clear it is more about the XQuery type model. Or, actually, a formalization of something that sits somewhere between them (presumably offered to help think about the issues and tease out ramifications and properties, no problems there.) I wonder when we can expect some paper defining XML as a set of functions (that can be performed on some abstract data model that looks quite like the XQuery one which is similar to XML Schemas' one which sits like a collossus astride the XML Infoset which may have a serialization to some characters on a wire in some syntax we won't have a name for anymore) :-) Cheers Rick Jelliffe [1] http://www.research.avayalabs.com/user/wadler/papers/xml-essence/xml-essence-flops.pdf
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