W3C home > Mailing lists > Public > xml-uri@w3.org > September 2000

RE: Fwd: I-D ACTION:draft-daigle-uri-std-00.txt

From: Miles Sabin <msabin@cromwellmedia.co.uk>
Date: Thu, 7 Sep 2000 14:39:23 +0100
Message-ID: <57C6E3244632D411A2F100508BC8079A1312B9@juno.interxtechnology.com>
To: xml-uri@w3.org
Simon St.Laurent wrote,
> I think the 'rest of us' might well benefit from clearer 
> distinctions between URIs and the resources they identify, 

But Simon, that's a pretty tall order, because there's no
end to the number of distinct resources a URL (nb. UR*L*) might
locate. John Cowans example (I forget the URL, it was a time-
server of some sort) was pretty good. Does that URL identify
entities (particular sequences of bits on any given occasion),
transient HTML documents (again changing over time); a 
persistent HTML document (but with parts which change over 
time); the current time in whereever; John's favourite page; 
John's favourite example; etc. etc. depending on how 
imaginative you are.

Given that the list of distinct resources is open ended, it's
hard to see how anyone could hope to come up with a general
account of their relationship with the URL which is less
abstract than the one we already have.

URNs, or any other scheme which actually specifies identity-
criteria, on the other hand, have a fair chance of being 
unequivocal.

Cheers,


Miles

-- 
Miles Sabin                       Cromwell Media
Internet Systems Architect        5/6 Glenthorne Mews
+44 (0)20 8817 4030               London, W6 0LJ, England
msabin@cromwellmedia.com          http://www.cromwellmedia.com/
Received on Thursday, 7 September 2000 09:41:16 GMT

This archive was generated by hypermail 2.2.0 + w3c-0.30 : Tuesday, 12 April 2005 12:17:25 GMT