[dsdl-discuss] Re: Schemas: "is" or "ought"

On Thu, 4 Jul 2002 01:52:44 +1000
"Rick Jelliffe" <ricko@topologi.com> wrote:

> When a schema is taken to be a "necessarily is", then an XPath implementation
> could optimize out impossible paths, rewriting the query for efficiency. This, of
> course, prevents Schematron and uses of XPath where you want to look at the
> data even if it is invalid.

 Some users might want to use RELAX NG schemas for eliminating invalid
data and generating Java programs for valid documents. Some users would like
to use RELAX NG schemas as a style guidance. I think that both approaches are
reasonable and that a reasonable schema language should allow both approaches.
I did have both approaches in mind when I designed RELAX Core.

Cheers,

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