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Re: XML Schemas

• To: Richard Lainchbury <freexe@g...>
• Subject: Re: XML Schemas
• From: ht@i... (Henry S. Thompson)
• Date: Thu, 27 Oct 2005 16:28:19 +0100
• Cc: xml-dev@l...
• In-reply-to: <2cbc8d0a0510270811l44a22c86r@m...> (RichardLainchbury's message of "Thu, 27 Oct 2005 16:11:11 +0100")
• References: <2cbc8d0a0510270234g65af59c7t@m...><f5b7jbzhy4d.fsf@e...><2cbc8d0a0510270811l44a22c86r@m...>
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Richard Lainchbury writes:

> Does that mean that you would never beable to write a schema for xhtml?

Um, why would it mean that?  The example you gave, of <input
type='...'/>, has no content, so there's not much to constrain.  Some
of the other attributes on <input> are type-specific, but neither SGML
nor XML DTDs allowed you to constrain those either -- the only
constraints are provided in the prose of the REC.  There is already
a W3C XML Schema which reconstructs the DTD for XHTML [1]

Are you thinking of schematron rules for those attribute-interaction
constraints?

ht

[1] http://www.w3.org/TR/2004/WD-xhtml-modularization-20040218/schema_module_defs.html#a_schema_module_defs.
- -- 
 Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
                     Half-time member of W3C Team
    2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
            Fax: (44) 131 650-4587, e-mail: ht@i...
                   URL: http://www.ltg.ed.ac.uk/~ht/
[mail really from me _always_ has this .sig -- mail without it is forged spam]
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