Re: [docbook-tc] RelaxNG et al. [was: DocBook Technical CommitteeMeeting Minutes: 17 September 2008]

Grosso, Paul wrote:
> Pardon my ignorance, as I haven't used Schematron, but.... 
> 
> I note the last column is "RELAX NG + Schematron/NVDL". Wha'ts NVDL?

NVDL is meta-schema validation language which can very easily describe
how to validate compound documents (with elements from various
namespace) and how to validate parts of document against multiple
schemas at the same time.

DocBook V5.0 uses NVDL to validate document against both RELAX NG and
Schematron schema. So effectively this is same as RELAX NG + Schematron
validation, but from user point of view this is only single validation
against NVDL schema which internally invokes validation against two
schemas. See:

http://www.docbook.org/docs/howto/#validators

> Is there such a thing as W3C XML Schema + Schematron?  If so, what
> would a column in this table look like for that combination?

Good question. Actually few minutes after I send the first draft this
idea also come across my nose. Please find attached updated table.

			Jirka

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