W3C home > Mailing lists > Public > w3c-rdfcore-wg@w3.org > April 2003

pfps-22, pfps-23, proposed resolution

From: Graham Klyne <gk@ninebynine.org>
Date: Thu, 03 Apr 2003 17:37:09 +0100
Message-Id: <5.1.0.14.2.20030403173104.00b6c988@127.0.0.1>
To: w3c-rdfcore-wg@w3.org

With reference to:
   http://www.w3.org/2001/sw/RDFCore/20030123-issues/#pfps-22
   http://www.w3.org/2001/sw/RDFCore/20030123-issues/#pfps-23

I propose that these issues are addressed by revised text at:
   http://www.ninebynine.org/wip/RDF-concepts/20030401/Overview.html#section-URIspaces
(also copied below)

Some further rationale and description of these changes can be found in my 
earlier message:
   http://lists.w3.org/Archives/Public/w3c-rdfcore-wg/2003Mar/0107.html

#g
--

The revised text is copied here for the archive:

[[
4. RDF Core URI Vocabulary and Namespaces (Normative)

RDF uses URIs to identify resources and properties. Certain URIs are 
reserved for use by RDF, and should not be used in ways not supported by 
the RDF specifications. Specifically, URIs with the following leading 
substrings are reserved for definition by the RDF specifications:

     * http://www.w3.org/1999/02/22-rdf-syntax-ns# (conventionally 
associated with namespace prefix rdf:)
     * http://www.w3.org/2000/01/rdf-schema# (conventionally associated 
with namespace prefix rdfs:)

Used with the RDF/XML serialization, these URI prefix strings correspond to 
XML namespace names [XML-NS] associated with the RDF core vocabulary terms.

Note: these namespace names are the same as those used in earlier RDF 
documents [RDF-MS] [RDF-SCHEMA].

[[[NOTE FOR REVIEWERS: Some terms in these namespaces have been deprecated, 
some have been added, and some RDF schema terms have had their meaning 
changed. We invite community feedback regarding the relative costs of 
adopting these changes under the old namespace URIs vs creating new URIs 
for this revision of RDF.]]]

Vocabulary terms in the rdf: namespace are listed in section 5.1 of the RDF 
syntax specification [RDF-SYNTAX]. Some of these terms are defined by the 
RDF specifications to denote specific concepts. Others have purely 
syntactic purpose (e.g. rdf:ID is part of the RDF/XML syntax) and should 
not be used in RDF to denote any kind of resource.

Vocabulary terms defined in the rdfs: namespace are defined in the RDF 
schema vocabulary specification [RDF-VOCABULARY].

Any information about URIs in the RDF and RDFS vocabularies (i.e. those 
that start with the RDF or RDFS namespace name) that is not supported by 
the RDF specifications (including possible future revisions and extensions) 
should not be taken to be valid in all uses of RDF.
]]


-------------------
Graham Klyne
<GK@NineByNine.org>
PGP: 0FAA 69FF C083 000B A2E9  A131 01B9 1C7A DBCA CB5E
Received on Thursday, 3 April 2003 12:59:53 EST

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