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Re: [xml-dev] Processing instruction to designate a schema as subset of another?

Many thanks Liam; exactly answers my question.

Apologies about my example using 'xml' in the PI.
Maybe It should be something like

<?schema-subset superset-loc="http://..."; superset-ns="http://..."; type="lax"?>

or maybe the name of the PI depends who owns the
PI spec. Is there a convention for this? Is a PI name
a bit like a namespace, conveying provenance, etc?
e.g. would some SDO like OASIS need to provide a
reserved word of their own, like with a URN?

Guessing it is unlikely this requirement would get into
XML Schema, I had figured something independent
of  the schema would be the most I could hope for,
besides which it might be good to keep it independent of
schema language anyway. I'm not keen on defining a
PI with RDF or a topic map but is this best practice?
Anyway, not much hope I could get any traction on this
as an individual so it would be up to the more powerful,
like ISO DSDL folk, to define something, I suppose.
I'm not sure anyone would start an OASIS TC just for
such a small spec as this would entail. Interesting
thought though :-)

Best regards and thanks again


Stephen D Green

2009/8/27 Liam Quin <liam@w3.org>:
> On Thu, Aug 27, 2009 at 07:33:48AM +0100, Stephen Green wrote:
>> Well 'standalone' is part of the XML declaration; I was thinking of
>> a processing instruction (relevant only to a schema) like:-
>> <?xml-subset superset-loc="http://..."; superset-ns="http://..."; type="strict"?>
> If you are requesting a change to XSD (W3C XML Schema), you
> should send the change request to the W3C XML Schema Working Group -
> the Status section at the start of each XSD 1.1 draft will tel
> you how to do that.
> Note that processing instruction targets starting with "xml" are
> reserved for use by the W3C XM Core Working Group.
> If you want something independent of Schema language, you should
> probably consider some external document, e.g. a topic map or rdf
> fragment, asserting the relationships between them.
> Liam
> --
> Liam Quin, W3C XML Activity Lead, http://www.w3.org/People/Quin/
> http://www.holoweb.net/~liam/ * http://www.fromoldbooks.org/

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