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   RE: DTDs aren't going away even when schemas arrive (was Re: Aretheresti

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  • From: Jonathan Borden <jborden@mediaone.net>
  • To: Michael Champion <mike.champion@softwareag-usa.com>, xml-dev@lists.xml.org
  • Date: Wed, 02 Aug 2000 10:55:19 -0400

Michael Champion wrote:

>So whatever the future of schemas for declaring constraints on
> document structure and content, DTDs aren't going away in the forseeable
> future as the place to make such declarations.
> And the question of how to handle the case where both the DTD and schema
> contain content model constraints is not easy to answer.  I write this
> [sorry, Lauren!] while listening to the DOM WG beat their
> collective heads
> against the wall trying to figure this out ... and lets not even
> talk about
> the little nuggets of complexity that namespaces throw into this
> toxic stew.

	At the very very least DTDs need to be retrofitted to handle namespaces. I
would say, add no new functionality, allow me to use DTDs as they otherwise
currently exist, with documents that use namespaces.

The issues:
1) need to define namespace prefix bindings in the DTD, at least for local
DTD purposes
2) the DTD declaration will depend on the expanded name, not the
prefix:local name in the literal sense as it currently stands.

Jonathan Borden
The Open Healthcare Group


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