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Re: Using XMLSchema-instance attributes in RDF/XML Syntax

From: Dan Brickley <danbri@w3.org>
Date: Thu, 22 Aug 2002 10:00:37 -0400 (EDT)
To: Dave Beckett <dave.beckett@bristol.ac.uk>
cc: "Peter F. Patel-Schneider" <pfps@research.bell-labs.com>, <thabing@uiuc.edu>, <www-rdf-interest@w3.org>
Message-ID: <Pine.LNX.4.30.0208220955570.21787-100000@tux.w3.org>

On Thu, 22 Aug 2002, Dave Beckett wrote:

> >>>"Peter F. Patel-Schneider" said:

> > > Using the W3C XML Schema language (henceforth WXS) to validate
> > > RDF/XML is tricky but possible.  ...
> >
> > It is?  Where is the XML Schema schema document for RDF/XML then?
>
> Here is how to find it.  Start at the RDF/XML Syntax WD and look in
> the section marked:
>   Other Syntax Schemas
>   http://www.w3.org/TR/rdf-syntax-grammar/#section-Other-Schemas
>
> where it points to
>   XML Schema for RDF/XML
>   http://ilrt.org/discovery/2001/09/rdf-xml-schema/
>
> (or typing "XML Schema for RDF/XML" into google gives it as result #3)
>
> which records the state of play - i.e. incomplete.  RDF/XML was
> created before WXS was designed.  If they don't work well, you
> know who to call.  But see below.

FWIW, the report of the 'Cambridge Communique' meeting on Schema
architectures (Oct 1999), attended by members of the then RDF Schema WG
and the XML Schema WG had this to say:

[[
It is not a requirement that XML Schema be able to validate conformance
to the full grammar of RDF 1.0 syntax (e.g. equivalence of elements and
attributes).
]] http://www.w3.org/TR/1999/NOTE-schema-arch-19991007


...so the XML Schema do have a reasonable story to tell if it proves
difficult to use XML Schema to police RDF document syntax.

Dan


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Received on Thursday, 22 August 2002 10:00:45 GMT

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