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RE: yet another sidetrack on what a URI identifies

From: <Patrick.Stickler@nokia.com>
Date: Wed, 15 Jan 2003 11:40:26 +0200
Message-ID: <A03E60B17132A84F9B4BB5EEDE57957B5FBAC7@trebe006.europe.nokia.com>
To: <fielding@apache.org>, <sandro@w3.org>
Cc: <www-tag@w3.org>

> In any case, the reason we had this discussion originally is because
> some people were complaining about xmlns identifiers being http URIs
> because they believed that a URI could not be both a name and a way
> of retrieving a web page.  They are wrong, as demonstrated repeatedly
> by working practice and the REST model, because they were ignoring
> the difference between a URI and a GET action on a URI.

That may be true for some folks, but some of us simply had a problem
with ambiguity of xmlns URIs being presumed to denote schemas, models,
vocabularies, and other resources which are far more than "sets of
names" and if a namespace URI denotes that namespace, then I would not 
consider an XML Schema, or RDF Schema, or RDDL document as a valid
representation of that namespace, since they all invariably include
a great deal more than embodied by the namespace itself, which is,
after all just a simple set of names that infers no semantics, structure,
or expectation of usage on those names. 

Dereferencing a namespace URI and getting a RDDL document or XML Schema
is like having a URI that denotes Paris, and getting a "representation"
that also includes all the information about Europe as well.

Received on Wednesday, 15 January 2003 04:40:31 UTC

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