Re: [xml-dev] XML vocabulary for expressing constraints?

[gkholman@CraneSoftwrights.com]

At 2013-12-10 14:59 +0000, Costello, Roger L. wrote:
> After all, they both involve identifying conflicts. So what is the 
> common thread that ties them together?
>
> ...... I have learned that what I describe above are instances of 
> Constraint Satisfaction Problems (CSP).
>
> So, I would like to express my constraints in XML and feed the XML 
> into a CSP tool. Has anyone created an XML vocabulary for expressing 
> constraints?
Isn't that what a schema is?

A DTD schema and a RELAX-NG schema express the constraints on 
vocabulary structure and values based on a pattern grammar.

A W3C XSD schema expresses the constraints on vocabulary structure 
and values based on type inheritance.

A Schematron schema expresses the constraints on vocabulary structure 
and values based on a set of assertions.

I think you need to be more specific in your question by asking if 
someone has created an XML vocabulary for particular kinds of 
constraints you are interested in.  I think your question is too 
general, but perhaps others can read more into it than what I am seeing.

. . . . . . . . . Ken


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