[sc34wg3] TM Data Model issue: prop-subj-address-values

Geir Ove Grønmo sc34wg3@isotopicmaps.org
03 Nov 2003 10:55:56 +0100


* Geir Ove Grønmo
| * Kal Ahmed
| | On Thu, 2003-10-30 at 21:54, Geir Ove Grønmo wrote:
| | > I _might_ consider http://example.org/, http://example.org/.,
| | > http://example.org/foobar/../, http://example.org/nodes.py?id=root,
| | > http://example.org/index.htm, http://example.org/index.jsp and
| | > http://example.org/index.html all to reference the same resource even
| | > though they are different locators. Not sure, but this issue may boil
| | > down to whether or not the same _resource_ can be referenced by more
| | > than _one_ URI. This depends on our definition of what a _resource_
| | > is.
| | 
| | I think that is the key point. The definition of resource is not a
| | clear-cut thing (not even the relevant RFCs, standards, and TAG
| | pronouncements seem to match on this). Also there is the issue of what
| | is a URI - are two URIs equivalent if the resolve to the same resource?
| | And then you get into a circular trap...
| 
| I found the following message, which should be of interest in this
| discussion:
| 
| http://rdfweb.org/pipermail/rdfweb-dev/2003-August/011820.html
| 
| RFC 2396 (URIs) does seem to indicate that different URIs can reference
| the same resource. 

Tim Bray has written up a very interesting document for the W3C TAG that
is relevant to this discussion:

  http://www.textuality.com/tag/uri-comp-4.html

It's well worth a read.

Geir O.