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   Re: DTD confusion (was Re: Lotsa laughs)

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  • From: David Megginson <david@megginson.com>
  • To: "XML Developers' List" <xml-dev@ic.ac.uk>
  • Date: Fri, 28 May 1999 15:29:23 -0400 (EDT)

David LeBlanc writes:

(on DTDs)

 > Ok, now i'm confused David - your second statement seems to
 > contradict your first statement.

If you give me a single, well-formed XML document, I can *always*
write a DTD that describes its structure.  

If you give me a list of structural traits shared by a class of XML
documents (otherwise known as a "document type"), I may not be able to
provide an XML 1.0 DTD that applies to all possible documents in the
same class but to none outside of the class.  I may not even be able
to write a DTD at all.

All the best,


David Megginson                 david@megginson.com

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