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   RE: XML complexity, namespaces (was WG)

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  • From: David Megginson <david@megginson.com>
  • To: "'XML Dev'" <xml-dev@ic.ac.uk>
  • Date: Tue, 23 Mar 1999 06:24:00 -0500 (EST)

Didier PH Martin writes:

 > By simple curiosity: Is it possible to declare an architectural
 > instance from an architectural form in XML by strictly following
 > the XML 1.0 spec? I do not mean here to simply have the
 > architectural elements as our element properties but to declare in
 > the prolog the correspondance between each markup and each
 > architectural element.

Yes -- this works in both SGML and XML: in XML, the architectural
declarations use alternatives to data attributes.

Please, everyone, remember that my statement was that there is nothing
that SGML does that XML cannot do (and vice-versa), not that they
always do them in the same way.

Please step back and take the perspective of a system architect, who
is not concerned with the minutiae of tag omission, data attributes,
or ignorable whitespace: XML and SGML both provide a clear-text
serialisation format for a single-rooted hierarchical tree, with the
ability to impose arbitrary directed graphs on top of that tree.
Nodes are named and have named properties as well as children, and a
node's children can contain both data and other nodes.

All the best,


David Megginson                 david@megginson.com

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