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Subject: Re: [docbook-tc] Are the Schematron assertions normative in 5.0?
From: Jirka Kosek <>
To: Norman Walsh <>
Date: Wed, 12 Oct 2005 21:58:13 +0200
Norman Walsh wrote:
> With DTDs, it was always understood that the DTD couldn't capture all
> the semantics of a language, that's why the documentation is normative.
> In RELAX NG, we can get a lot closer. The Schematron assertions
> actually test for things that we say are language constraints (a glossterm
> linkend must point to a glossentry; the top-level element must have
> a version attribute, etc.).
Then it makes sense to make Schematron normative, because these
constraints are not expressed in a prose.
> The only downside I see to making the assertions normative is that there
> aren't very many validators that actually perform those checks. So you validate
> with jing using the schema that has the annotations, but jing doesn't test
> the annotations, so do you get the illusion that your document is more valid
> than it really is? And is that a problem?
I think that this is not a problem, but another thing that should be
explained in how-to.
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Jirka Kosek e-mail: http://www.kosek.cz
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