Re: [xml-dev] A single, all-encompassing data validation language- good

[Jirka Kosek <jirka@kosek.cz>]

Costello, Roger L. wrote:

> Up till this date, grammar-based and rule-based languages have been
> kept separate:
> 
>     Grammar-based Languages: XML Schema, Relax NG, DTD
> 
>     Rule-based Languages: Schematron, RuleML

Not completely. For more then year you can use NVDL to validate document
against both grammar and rule-based schemas at the same time.

Anyway, I'm glad to see xs:assertion in WXS. I have only two concerns:

- xs:assert uses probably too restricted subset of XPath

- Will be WXS 1.1 widely deployed in foreseeable future given the
investments spent by big companies on WXS 1.0 infrastructure?

			Jirka

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