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   Re: XML complexity, namespaces (was WG)

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  • From: james anderson <James.Anderson@mecomnet.de>
  • To: "xml-dev@ic.ac.uk" <xml-dev@ic.ac.uk>
  • Date: Sun, 21 Mar 1999 21:50:52 +0100

We're writing hypothetically, about a mechanism (namespaces == architecture)
which is poorly defined, but ...

I would take "used to do architectural forms" to mean that the information to
be inferred from a namespace declaration would supplant (some portion of) that
which would otherwise have been provided by existing architectural
declarations. Otherwise namespaces are just "architecture-neutral".

When I wondered about how this might work, it occurred that the identity
between the URI in a namespace declaration and that in the system-id of a
IS10744:arch PI might be used to infer mappings equivalent to those provided
by the individual architectural mapping attributes.

The problem with this is that it provides no means to map the local parts of
universal names. Without such a means, either a given element type maps to
exactly one architectural form (my original question), or the local parts of
the respective type names must be identical in all architectures (which would
seem an equally severe restriction).  That is, the standard architectural
declarations are still necessary and, again namespaces are "architecture neutral".

What mechanism were you supposing?

Steven R. Newcomb wrote:
> [James Anderson:]
> > > ...  Namespaces (at least the bulk of their
> > > syntax and the idea of identifying a namespace via a URI)
> > > could also be used to do architectural forms.
> > I've wondered about this.
> > Wouldn't they, at least in their standardized form, be restricted to the
> > limited fimaily of architectures which are mutually exclusive?
> I don't [yet] see why.  What makes you think so?

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