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Re: More on XSD in RDF

From: Patrick Stickler <patrick.stickler@nokia.com>
Date: Mon, 25 Nov 2002 14:21:33 +0200
Message-ID: <00f601c2947d$30ecbfc0$4b9316ac@NOE.Nokia.com>
To: "ext Jeremy Carroll" <jjc@hplb.hpl.hp.com>, <w3c-rdfcore-wg@w3.org>

[Patrick Stickler, Nokia/Finland, (+358 40) 801 9690, patrick.stickler@nokia.com]

----- Original Message -----
From: "ext Jeremy Carroll" <jjc@hplb.hpl.hp.com>
To: "Patrick Stickler" <patrick.stickler@nokia.com>; "ext Jeremy Carroll" <jjc@hplb.hpl.hp.com>; <w3c-rdfcore-wg@w3.org>
Sent: 25 November, 2002 14:12
Subject: RE: More on XSD in RDF

> > My impression is that while there is evidently a problem with
> > equality in XML Schema
> > simple datatypes, it is not per se a problem with RDF Datatyping.
> >
> > I.e., it should be sufficient to (a) note the problems in XML
> > Schema and (b) submit
> > suggestions to the XML Schema WG, but I don't see how this
> > impacts the current
> > RDF datatyping model.
> >
> > If XML Schema says that xsd:float and xsd:decimal have disjunct
> > value spaces,
> > we may wish to disagree and consider that a bug, but that doesn't
> > affect how
> > those datatypes are modeled in RDF.
> Clearly, a target audience for my doc, after I have addressed the string valued datatypes is the XML Schema WG.
> I tend to agree with DanC, that we haven't really done datatyping until an implementor can implement. Since HP intend to implement
our specs, it is necessary for someone in HP to work out what they mean. When the specs are self-contradictory this is a problem.
(Not an uncommon problem :( ).
> I think it makes more sense for the WG to do this work once for everyone, rather than leave it to the implementors to do it,
possibly differently, one by one.
> It's a shame we took so long on the RDF mechanics, and have hence neglected the XSD side of the picture.
> Jeremy

Well, while I also agree in principle with DanC that at the end of the day, this
stuff has to do some real work, I still don't see that it is the concern of the RDF
Core WG that the XML Schema datatypes have some problems -- other than
to perhaps point them out. I.e., if the XML Schema specs say that floats and
decimals are disjunct -- or if that is a possible interpretation -- then let's avoid
those in examples and test cases, but there's nothing wrong with RDF and thus
it is not the RDF Core WG's job to sort out that mess.

That's not to say, of course, that members of the RDF Core WG, also being
members of the RDF and XML communities should not work towards clarification
of the issues, but it's out of scope IMO for the RDF Core WG itself.


Received on Monday, 25 November 2002 07:21:35 UTC

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