Re: XML and embedded compound data types (was "Why XML data typin is har
Gabe Beged-Dov wrote: > > The perspective is the possibly naive one that XML can/should be used to > capture ALL of the structural aspects of a complex tree of data. Wherever a > compound type occurs in the source data, it should be mapped to a > corresponding compound type in XML. What is the "source data?" XML is a language description tool. It is not a database serialization tool. In many cases the "source data" is my head. XML happens to be useful as a database serialization tool because databases are simpler than the stuff I have in my head. > A key heuristic to see if this approach > is being adhered to is to see if any attribute values or character data > requires additional parsing by the application in order to deserialize > additional structure. XML allows us to design languages that are palatable for human beings. That is its only technical advantage over an S-Expression-based equivalent. You can remove the "flaw" of human orientation by requiring everything to be explicitly expanded, but you will also destroy XML as a language. It will be as unreadable and untypeable as its competitors and will be ignored just as they are. Just out of curiousity, here are some of the XML-related specs that fail according to your heuristic: * XPointer * XML Namespaces * XSL and of course any specification built *on top* of these. Paul Prescod - ISOGEN Consulting Engineer speaking for only himself. http://itrc.uwaterloo.ca/~papresco Christmas shopping in a T-Shirt? Toto, I have a feeling we aren't in Canada anymore. xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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