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Re: A single, all-encompassing data validation language- good

  • From: Jirka Kosek <jirka@k...>
  • To: "Costello, Roger L." <costello@m...>
  • Date: Thu, 02 Aug 2007 23:41:36 +0200

Re:  A single
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 Kosek      e-mail: jirka@k...      http://xmlguru.cz
       Professional XML consulting and training services
  DocBook customization, custom XSLT/XSL-FO document processing
 OASIS DocBook TC member, W3C Invited Expert, ISO JTC1/SC34 member

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