Re: [xml-dev] Re: Flexible Schemas (was RE: [xml-dev] The task tobe solved by RDDL)

At 12:04 AM -0800 1/22/02, Ronald Bourret wrote:

>>  including a link to a relevant schema,
>
>This won't happen. The RDDL document for XHTML cannot reasonably be
>expected to contain pointers to all the schemas that use XHTML.
>

Again the problem is the XHTML schema, not the RDDL document. If the 
XHTML schema is written in such a way that it says "You can insert 
any element from any non-XHTML namespace here" then you most 
certainly can do this. I do not happen to know whether or not the 
XHTML schema is so designed, though a quick search for xs:any in the 
schemas implementation of XHTML modularization suggests that it does 
not.

>>  and the schema language and the schemas themselves
>>  are designed to allow these sorts of multiple namespace documents.
>>  (The last point is the biggest obstacle in practice.)
>
>I don't see why the last point is the obstacle. I thought that all
>schema languages already allowed this. Or am I missing something here?
>

DTDs don't really allow this, but the real practical obstacle is 
whether or not the individual schemas are designed to allow this.
-- 

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