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- From: Norman Walsh <email@example.com>
- To: James Robertson <firstname.lastname@example.org>
- Date: Wed, 09 Aug 2000 07:41:05 -0400
/ James Robertson <email@example.com> was heard to say:
| Isn't the issue that namespaces allow you
| to mix information from a number of sources,
| however you see fit? Every document can have
| different elements, and yet still be considered
| OK according to well-formed and namespace rules ...
| How do we handle _this_ behaviour, and still
| make some use of DTDs?
The only way that I'd consider such a document valid is if the (set of)
DTDs in question all referred to each other. I would expect the content
models of each DTD to specifically allow the mixtures. For example,
a DocBook+MathML DTD might allow:
<!ELEMENT equation (alt?, (graphic+|mediaobject+|mml:math+))>
But to say that you can mix them "willy nilly" violates the principals
of validity at their core.
Be seeing you,
Norman.Walsh@East.Sun.COM | The wonder is, not that the field of stars
XML Technology Center | is so vast, but that man has measured
Sun Microsystems, Inc. | it.--Anatole France