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RE: Namespace name: better to use URN or URL?
- From: "Bullard, Claude L (Len)" <email@example.com>
- To: "Roger L. Costello" <firstname.lastname@example.org>, email@example.com
- Date: Thu, 30 Aug 2001 09:59:09 -0500
Philosophically, I prefer a URN. As you say, it
is clear what it is, and practically, the systems
I work with don't color it blue and make it clickable;
that is, it isn't a hyperlink. Practically, some
of us are tool thralls and the tool vendors
make that choice for us.
We've debated it endlessly, but I think using a
URL binds it to the web by using a system
specific location identifier in the namespace,
and that pollutes the namespace in situations
where the information could be reused on non-Internet
systems. One has to decide if the information
is ever to be repurposed off the internet.
When we had this argument some time ago, it
came down to, do you ever plan to resolve it?
If it is *really just a label*, no winking,
no nudging but honest clean design, one has
to choose for themselves and decide if
really is a name or a location. Identity
is not the horse you want to ride for that
argument. Systems sit inside systems and
that is the problem and solution to describing
Ekam sat.h, Vipraah bahudhaa vadanti.
Daamyata. Datta. Dayadhvam.h
From: Roger L. Costello [mailto:firstname.lastname@example.org]
Sent: Thursday, August 30, 2001 7:22 AM
Subject: Namespace name: better to use URN or URL?
Is there any advantage to formulating a namespace name as a URN, vice
formulating it as a URL?
As I see it,
- the advantage of formulating a namespace name as a URN is that it's
easier to conceptualize a URN as a "name" and not a "location".
- the advantage of formulating a namespace name as a URL is that the
namespace "could" then have a dual purpose - it could serve both as a
name and as a location to "something". I am ashamedly ignorant of RDDL,
but I vaguely recall reading something about using a namespace URL to
point to a RDDL document. Does RDDL enter into this issue?
My impression is,
A couple years ago there was a general feeling in the XML community that
URNs were the preferred form for namespace names, but recently there
seems to be a shift towards preferring URLs. Do you agree?