- From: Michael Mealling <michael@bailey.dscga.com>
- Date: Fri, 26 May 2000 09:32:16 -0400
- To: Al Gilman <asgilman@iamdigex.net>
- Cc: Jonathan Borden <jborden@mediaone.net>, xml-uri@w3.org
On Fri, May 26, 2000 at 09:36:00AM -0500, Al Gilman wrote: > At 10:53 PM 2000-05-25 -0400, Jonathan Borden wrote: > [sorry to have to belabor the correction of a minor red herring...] Not really. This actually applies to several URI schemes.... > RFC-2392 which defines the IETF Proposed Standard for the 'cid' URL says > explicitly "The Content-ID of a MIME body part is required to be globally > unique." > > For 'globally' in this case, read "across all messages and not just within > the current multipart." > > <snip> > > The kind of context-dependency that you allude to is explicitly proscribed > by the "required to be globally unique" language in the RFC. Correct. This actually applies to several URI schemes that have specifically proscribed the use of relative URIs by making either invalidating the concept entirely by requiring uniqueness or by disallowing the "/" character in the right hand side. The URN scheme did this as well since the concept of relativeness was considered dangerous in things that required very strong 'name' semantics. I.e. a URN is an opaque thing, it is considered an error to think you understand enough of the namespace to do things like relative naming. -MM -- -------------------------------------------------------------------------------- Michael Mealling | Vote Libertarian! | www.rwhois.net/michael Sr. Research Engineer | www.ga.lp.org/gwinnett | ICQ#: 14198821 Network Solutions | www.lp.org | michaelm@netsol.com
Received on Friday, 26 May 2000 09:43:58 UTC