- From: Bill de hÓra <dehora@eircom.net>
- Date: Thu, 23 Jan 2003 17:05:34 +0000
- To: Tim Bray <tbray@textuality.com>
- CC: www-tag@w3.org
Tim Bray wrote: > How about a slight recasting of that: > > 1. Different URIs can identify the same resource, in the opinion of the > creators and users of that resource. > 2. The Web is designed on the principle that a single URI identifies a > single resource which does not change. In practice, this principle is > someties violated (insert list of nasty examples), and software must > often deal with the consequences, but such inconsistency is always > damaging and SHOULD be avoided. -Tim Clearer, thanks. But abuse of this principle also affects specifications such as RDF, as well as web software. For example it will mean we have to merge RDF graphs with great caution before inferences can be made and we have to be careful about RDF queries that span multiple graphs. If the rdf-wg were happy to add words to the primer about how breaking this principle interplays with the function that determines the denotation of a URI, that would help greatly. That is, when merging two RDF graphs, be aware that a URI used in graph 1 might not have the same denotation as it does in graph 2. Bill de hÓra
Received on Thursday, 23 January 2003 12:07:32 UTC