[dsdl-discuss] Re: Working draft of issues for Schematron (part 3) revision

Can we make the following unoffical principle for DSDL schemas then?

"Schema languages are responsible for their own construction and
composition"

I was not sure whether Part 10 would look after this, so I kept minimal
in Part 3,
but it is good if there is some unifying principle.

I think we should track the principles. Off the top of my head:

* little languages: targetted and combinable
* XML-in/XML-out: no non-XML PSVI outputs
* validation not type annotation: annotation/tranformation/reporting can
be a side-effect of course
* schema languages responsible for their own construction: modular
* re-use concepts and names where possible: easier to learn
* new languages minimally implementable in XSLT 1 where possible
* avoid W3C XML Schemas mistakes, but provide superset of their features
for validation
* include formal characterization/approximation in some logic system,
where possible

Cheers
Rick

Martin Bryan wrote:
> Thanks Rick. Looks a good starting point for discussion. My personal
> preference would be alignment with RELAX NG wherever possible as that
> means less of a learning curve for people working with the whole set
> of our standards. (But then I'm biased!)
>
> Martin

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