xmlns::#FIXED [Re: Problems validating the W3C schema DTD's]
the quoted statement regarding DTD's is not universal. it would be more accurate to describe the restriction as: "MSXML does not treat namespace prefixes as symbolic intermediaries, but instead as ordinary characters in element and attribute names." there is nothing keeping a parser from inferring xmlns binding scope and performing prefix expansion. while it is true that this requires that the document's content models be complete and consistent, this not more restrictive the presumptions entailed by a #FIXED constraint and permits the DTD-user much greater latitude. Andrew Layman wrote: > > The MSXML parser requires that any "xmlns" attribute declared in a DTD must > be FIXED because, if you want to use the DTD to validate an instance, you > must use exactly the same prefixes in the instance as were used in the DTD. > > Looking at the same point from another angle, DTDs do not treat namespace > prefixes as symbolic intermediaries, but instead as ordinary characters in > element and attribute names. As such, their binding is fixed by the author > of the DTD, and any alteration of the binding in a document instance would > produce an instance no longer described by that DTD. 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/ and on CD-ROM/ISBN 981-02-3594-1 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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