Re: [chairs] Specification Namespaces? Standard XML Schema ValidationService

[Norman Walsh <ndw@nwalsh.com>]

/ "David RR Webber" <david@drrw.info> was heard to say:
| Namespace I would urge should be used with extreme caution and in a
| minimilistic way.  Paradoxically CAM itself makes one single use of
| namespace to differentiate embedded attribute and predicate usage,
| that needs to be filtered separate from the rest of an XML instance itself.
| Otherwise - judicious use of XPath can easily differentiate the context
| and usage of fields in all but the most arcane syntax instances.

I'm reasonably confident that there are a lot of different viewpoints
on this issue. There's certainly a case to be made for reusing names
in multiple contexts and making sure that different contexts are
clearly identified.

| BTW - we are using this declaration pattern for the namespace which
| I would suggest is adequate - if you absolutely must have a namespace
| for your purposes:
|
|   xmlns:as="http://www.oasis-open.org/committees/cam";

If you define an XML vocabulary, you should use a namespace. OTOH, if
someone else has written a vocabulary with exactly the semantics you
need, re-use it.

As to the particular namespace pattern you've chosen, I'll point out that
ending your URI with "/" or "#" (if you have a desire to use the URI in
RDF) may have practical benefits.

                                        Be seeing you,
                                          norm

-- 
Norman.Walsh@Sun.COM / XML Standards Architect / Sun Microsystems, Inc.
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