XHTML & Schemas

David Megginson david at megginson.com
Thu Sep 2 14:16:10 BST 1999

Oren Ben-Kiki writes:

 > > This is something that SGML got wrong and XML got right -- SGML
 > > assumed that there was always a *single* DTD that applied to any
 > > existing document (though that never worked in practice, so we
 > > always had to invent kludges for non-trivial systems), so that a
 > > document instance could not exist independently of its schema and
 > > vice-versa (external DTD subsets are not independent objects in
 > > SGML, but simply part of the document that includes them).
 > The quoted section 4.1 of the XSchema draft seems to directly
 > contradict his view of what's right, so XML did not "get it
 > right". Am I missing something again?

Yes -- XML-Schema is not XML.  XML-Schema is (currently) getting it
wrong, but they're in the early drafts, so I still hope for their

All the best,


David Megginson                 david at megginson.com

xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev at ic.ac.uk
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 at ic.ac.uk the following message;
(un)subscribe xml-dev
To subscribe to the digests, mailto:majordomo at ic.ac.uk the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa at ic.ac.uk)

More information about the Xml-dev mailing list