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Re: Non-deterministic content models

• To: "Eric van der Vlist" <vdv@d...>,<xml-dev@l...>
• Subject: Re: Non-deterministic content models
• From: "Bob Foster" <bob@o...>
• Date: Tue, 15 Jul 2003 04:38:10 -0500
• References: <3.0.6.32.20030715055242.01069350@p...> <20030715040539.GD17627@m...> <1058247974.26014.54.camel@delleric>

From: "Eric van der Vlist" <vdv@d...>
> I have recently written (with much help from Murata Makoto) a chapter
> dedicated to Relax NG, ambiguous and non-deterministic models proposing
> a distinction between determinism and unambiguity and showing some more
> examples:
>
> http://books.xmlschemata.org/relaxng/RngBookAssignment.html
>
> I hope that this chapter will clarify these topics and thank you for
> sharing what you think about it.

I am not sure this technical distinction helps the average schema writer.
For example, rewriting an ambiguous schema so it is merely non-deterministic
won't help XML Schema users. ;-}

The only case I can think of where the distinction makes any difference is
in XML Schema union types, which are allowed to be non-deterministic but are
not unambiguous because of the first-match rule.

Bob Foster

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