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Re: Namespace name: better to use URN or URL?
- From: Tim Bray <email@example.com>
- To: firstname.lastname@example.org
- Date: Tue, 04 Sep 2001 08:09:45 -0700
At 09:11 AM 04/09/01 +0100, David Carlisle wrote:
>Names based on the domain name system (http:// or mailto: etc) do have
>the good properties of being relatively easy to generate (relatively)
>uniquely and be memorable.
They also have the fuzzy, intangible, but important advantage of
being first-class citizens of the web. When there's a Uniform
Resource Locator there is (potentially) a Resource. I think it's
a good idea that vocabularies and their semantic elements be
a part of the fabric of the web, which they're not unless they're
addressable. We're still working out how to use this capability -
for my ideas on the subject, see rddl.org - but it feels important.
NB this notion was first introduced to me by Dan Connolly and
TimBL, who are paid to worry about this kind of stuff.
And I agree about the egregious ugliness of UUIDs; if they
have a place anywhere in the world, it's down in the bowels
of COM objects.
>They have the bad property of tempting the
>designers of XML Schema to suggest that a schema validator might try to
>use the URI for something which famously "is not a goal" of XML
>Namespaces, but that's the price you pay, apparently.
The "not a goal" refers specifically to *schemas*. We didn't
want either DTDs or XSDL or any other schema language making
a land-grab for the namespace-name address. -Tim