• From: Mike.Champion@S...
• To: xml-dev@x...
• Date: Thu, 04 Jan 2001 15:49:56 -0500

> -----Original Message-----
> From: Sean B. Palmer [mailto:sean@m...]
> Sent: Thursday, January 04, 2001 3:34 PM
> To: Jonathan Borden; Rick Jelliffe; xml-dev@x...
> Subject: XHTML m12n XSD

 
> 1. It may *not* be feasable to complete XHTML Schema m12n,
> due to many many inherent difficulties
> 2. An XML Schema version of XHTML would *not* be equivalent to a DTD
> version, altohugh I'm sure people will claim it is :-)
> 3. XHTML is more a doucment format than a data format, so the
> reasoning is slightly blurred
>

Hmmm ... this is very interesting.  Could someone elaborate on these points, or point us to somewhere they are discussed?  I understand the many ways in which

DTDs are too limited to be used effectively for "data", but never heard that
XSDs are not fully suitable for "documents". 

Clearly the XHTML entity declarations would have to be in a DTD (since there is no way to declare entities in XSD), but in other ways would an XSD and a DTD version of a document "schema" (broadly defined) be non-equivalent?

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