xml-dev - Re: XSchema Question 2: Namespaces

[David Megginson <ak117@freenet.carleton.ca>]

Lisa Rein writes:

 > Let's not forget that - although I have been personally amazed at
 > the unprecedented usefulness of this discussion group for its
 > unprecedented assistance to the WG on numerous occasions (and
 > myself personally :-) It is the XML WG -- NOT US -- that will
 > ultimately define "XSchema's" syntax etc. (if that is indeed what
 > hey decide it should be called).

I don't know if this is -- strictly speaking -- true.  The WG may
define a core schema language, but I would be surprised if it is the
only one.  As I've mentioned before, it makes sense to have
specialised schema languages for different knowledge domains: for
example, maintenance document designers should deal with chunks like
"task", and "step", not "element".

The real question is what these high-level schema languages map to for
exchange.  All of them (the to-be-created W3C schema language,
XSchema, Microsoft's XML-Data, etc.) should be able to be transformed
to DTDs for exchange; perhaps they should also be able to be
transformed to the W3C schema language, if that becomes common for
interchange.

One interesting discipline would be to derive XSchema from RDF using
architectural forms: the RDF names would be hidden behind the scenes
(as #FIXED attributes in the XSchema DTD), but would be available to
most XML processors.  I wouldn't be surprised if this ends up being
the most common way to use RDF.


All the best,


David

-- 
David Megginson                 david@megginson.com
           http://www.megginson.com/

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