- From: Graham Klyne <GK@NineByNine.org>
- Date: Thu, 16 Jan 2003 14:49:16 +0000
- To: Frank Manola <fmanola@mitre.org>
- Cc: RDF core WG <w3c-rdfcore-wg@w3.org>
Frank, A belated response... just to say thanks; I'd missed the bit in section 3, and that does make me more comfortable. As for the schema, I guess it needs to be updated; I suppose I should send a note to XML schema WG. #g -- At 02:21 PM 12/31/02 -0500, Frank Manola wrote: >Graham Klyne wrote: > >snip >>[For discussion] >>Section 0.2, Prefix xsd: namespace: >>Maybe this is OK, but I think it should be checked. Some time ago, DanC >>posted a "Get off my lawn" comment -- >>http://lists.w3.org/Archives/Public/www-rdf-interest/2000Sep/0162.html, >>pointing out that folks shouldn't define URIs occupying namespaces that >>are controlled by some other group. >>It's not clear to me that the XML schema specs define URIs of the form >>(e.g.) http://www.w3.org/2001/XMLSchema#decimal, since the concatenation >>convention is something introduced by RDF. Also, the XML schema >>specification does not introduce a '#' into its namespace. There has >>been some discussion about this issue, but I'm not sure that it's fully >>resolved; it's not clear to me that the XML schema specs sanction use of >>(say) http://www.w3.org/2001/XMLSchema#decimal to denote an RDF datatype. > > >I'm commenting on this because there've been comments on this before >concerning other documents (and Primer has similar material). It seems >clear to me that the XML schema specs define URIs of the form in question, >because although the concatenation convention may be introduced by RDF, >the XML Schema datatypes spec (section 3) says explicitly "For example, to >address the int datatype, the URI is http://www.w3.org/2001/XMLSchema#int" >(it also explicitly says to construct the URIs of datatypes by using the >base URI http://www.w3.org/2001/XMLSchema, and the name of the datatype as >a fragment identifier). I'm sure they don't care whether such URIs are >actually constructed using RDF's concatenation convention, or by some >other means, but they do say the URIs should be of that form. > > >>Also, I note that the normative references cite XML schema part 2, but >>the document one gets by retrieving http://www.w3.org/2001/XMLSchema >>refers to part 1 only. I think this may be an omission in the document >>there rather than an error in this specification. > > >I think there's a misunderstanding here. if you go to the W3C XML Schema >page http://www.w3.org/XML/Schema, you'll see that the XML Schema specs >are published in three parts. The third part, "XML Schema Part 2: >Datatypes", has URL http://www.w3.org/TR/xmlschema-2/, which is the URL >our documents (including semantics) cite for XML Schema datatypes. The >document at http://www.w3.org/2001/XMLSchema supposedly describes the >http://www.w3.org/2001/XMLSchema *namespace*. However, it's dated several >months earlier than the actual specs, and it's not clear what official >status that actual page has. > > > > > > >-- >Frank Manola The MITRE Corporation >202 Burlington Road, MS A345 Bedford, MA 01730-1420 >mailto:fmanola@mitre.org voice: 781-271-8147 FAX: 781-271-875 ------------------- Graham Klyne <GK@NineByNine.org>
Received on Thursday, 16 January 2003 12:21:17 UTC