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Bullard, Claude L (Len) wrote:
> For schemas, nyet. But for the Schema Definition
> language itself, da. I don't know what RELAX NG
> is using for this. Anyone?
Well, remember that RNG provides only validation, not
interpretation:[*] it has nothing like default attributes
or entity declarations. Therefore, the RNG attitude is that
it is the validator, not the document author, who
decides which schema to validate a document against and when.
(Although in practice the schema may often originate
with the document author, or an earlier avatar thereof.)
As a result, there is no provision in either an RNG schema
or a document to refer to the other.
> Levels. Agreements are usually layered if negotiated.
> Blind exchanges should not be the way the web works.
[*]In principle, RNG-based tools could do type decoration
as well, though there are problems with overlapping types
that are not yet solved.
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