On Tue, 25 Apr 2006, Ryan King wrote:
URLs, if used propertly can be sufficient for "globalby unique
identifier[s]." Sure, you can mess things up by using a non-routeable address
or scheme, but its pretty easy to get it right, too.
URLs may apply to many cases but not necessarily all.
-- some identifiers are not resolvable by default, such as UUID
-- many identifiers have well-established convention by URI/URN registry,
such as urn:isbn or tel:, in these cases I don't think it's a good
practice to re-invent all of them in URL.
I think the case for ISBN is no big difference from telephone number or
zip code, etc. One may want to use good established practices instead of
having to create a URL for them.
Adding a URI property to any microformat would mean an expansion to the
vocabulary, when we already have several very close terms. I'd be wary of
doing that.
Is it possible to enumerate other alternatives? I am not well familar with
all other choices, but I think both UID and URL have problems.
regards,
xiaoming
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