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Hi,
Le dimanche 11 septembre 2005 à 18:03 -0700, Mark O. Zorro a écrit :
.../...
> I'd like to constrain the DTD content model, if at all possible, so
> <div> may have one, and only one, of the following:
>
> Either 1) (%Block.class)*
> Or 2) (#PCDATA | %Inline.class;)*
.../...
> I'm getting the sinking feeling there's no way to build the content
> model I'd like in XML, at least which would work in a DTD. If not,
> why not? Would XML Schema or RelaxNG resolve the issue?
This is one of the few restrictions that has been kept in RELAX NG (see
http://books.xmlschemata.org/relaxng/relax-CHP-7-SECT-10.html for some
comments about this fact)...
To express this kind of constraints, you could use Schematron either as
a standalone schema or embedded in RELAX NG or W3C XML Schema schemas.
Eric
--
Read me on XML.com.
http://www.xml.com/pub/au/74
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Eric van der Vlist http://xmlfr.org http://dyomedea.com
(ISO) RELAX NG ISBN:0-596-00421-4 http://oreilly.com/catalog/relax
(W3C) XML Schema ISBN:0-596-00252-1 http://oreilly.com/catalog/xmlschema
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