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Re: What does RDF consider a namespace to be?

From: Graham Klyne <GK@ninebynine.org>
Date: Tue, 18 Feb 2003 19:38:06 +0000
Message-Id: <5.1.0.14.2.20030218193459.03c0c590@127.0.0.1>
To: "Peter F. Patel-Schneider" <pfps@research.bell-labs.com>
Cc: www-rdf-comments@w3.org

Peter,

With reference to your message:
   http://lists.w3.org/Archives/Public/www-rdf-comments/2003JanMar/0150.html

You cite the RDF Concepts document, but I'm not sure what kind of change 
you are asking for here.

As I understand it, the question is concerned with whether a namespace is 
invariant, or can names be added and removed?

This question seems to have no bearing on the definition or interpretation 
of RDF.  Are there any specific problems raised by this issue, or examples 
of RDF whose interpretation is ill-defined, or do you have specific 
suggestions for changes to the text?

#g
--

At 10:03 AM 1/30/03 -0500, Peter F. Patel-Schneider wrote:


>What does RDF consider a namespace to be?
>
>It appears to me that the XML namespaces document makes XML namespace
>simply be the set of URI references that share a common prefix.  Therefore
>all XML namespaces contain an infinite and unchanging set of URI
>references.
>
>However, Concepts says that ''Some terms in these namespaces have been
>deprecated, some have been added, ...''  which appears to indicate that the
>names in the namespace can be changed.  Does RDF actually use a different
>meaning of a namespace than is used in XML?
>
>Other places in the RDF documents also seem to indicate that RDF considers
>namespaces to have finite and changing sets of URI references.  For
>example, Section 5.1 of RDF Syntax says
>
>         The [RDF] namespace contains the following names only:
>         ...
>         Any other names are not defined ....
>
>Concepts says
>
>         Vocabulary terms defined in the rdfs: namespace are defined in the
>         RDF schema vocabulary specification ....

-------------------
Graham Klyne
<GK@NineByNine.org>
Received on Wednesday, 19 February 2003 11:28:35 GMT

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