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RE: AW: Peter's slides about the MOF metamodel

From: Michael Schneider <schneid@fzi.de>
Date: Fri, 8 Aug 2008 14:11:21 +0200
Message-ID: <0EF30CAA69519C4CB91D01481AEA06A0AD957B@judith.fzi.de>
To: "Alan Ruttenberg" <alanruttenberg@gmail.com>
Cc: <public-owl-wg@w3.org>
Hi Alan!

Alan Ruttenberg wrote:

>I'm sorry. I don't understand the distinction between a model of a
>syntax and a grammar. Nor do I think i necessarily want to. Seems to
>be splitting hairs.

The syntax of OWL DL goes beyond its grammar. 

For example, the "nonstructural restrictions" in 

  <http://www.w3.org/TR/owl2-syntax/#Nonstructural_Restrictions_on_Axioms>

are syntactic constraints, and violating them is a syntax error. But one
cannot express them by means of a grammar.

Cheers,
Michael

--
Dipl.-Inform. Michael Schneider
FZI Forschungszentrum Informatik Karlsruhe
Abtl. Information Process Engineering (IPE)
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Received on Friday, 8 August 2008 12:12:07 GMT

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