[dsdl-discuss] Re: Overlaying schema expressions

On Thu, 27 May 2004 10:08:00 -0400
"G. Ken Holman" <gkholman@cranesoftwrights.com> wrote:

>
> I'm curious what people here think about this.

I certainly like the idea of using more than one schema per document. But,
in my understanding, a lot of people think that this is insane.

Many people think that schemas provide semantics to documents. For them, if
a document marries with more than one schema, there will be two sets of
semantics and thus such bigamous marriage is unacceptable. PSVI, XPath 2.0,
XQuery, XSLT 2.0 are based on this approach.

I (and probably most members in this ML) think that a schema is merely for
sanity checking and it does not provide any semantics (although schemas
can be used for generating programs). I strongly doubt the future of
PSVI, XPath 2, XSLT 2, XQuery, etc. In five years (when lots of hype
around XML disappear), we will know if which approach is correct.

Cheers,

-- 
MURATA Makoto <murata@hokkaido.email.ne.jp>
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