[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Re: Non-deterministic content models

deterministic models help
On Tue, 2003-07-15 at 11:38, Bob Foster wrote:
> 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. ;-}

This chapter is in a book about Relax NG and its number one goal is to
help Relax NG 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.

Or for using Relax NG tools (such as MSV) which can derive type
information out of unambiguous schemas whether deterministic or not
(more precisely, it will provide type information even if the schema is
ambiguous but I wouldn't always advise to rely on it).

Read me on XMLhack.
Upcoming Schema languages tutorial (registration open):
 - August 4th (Montreal, Canada)  http://makeashorterlink.com/?U28A217A4
Eric van der Vlist       http://xmlfr.org            http://dyomedea.com
(W3C) XML Schema ISBN:0-596-00252-1 http://oreilly.com/catalog/xmlschema


Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
First Name
Last Name
Subscribe in XML format
RSS 2.0
Atom 0.3

Stylus Studio has published XML-DEV in RSS and ATOM formats, enabling users to easily subcribe to the list from their preferred news reader application.

Stylus Studio Sponsored Links are added links designed to provide related and additional information to the visitors of this website. they were not included by the author in the initial post. To view the content without the Sponsor Links please click here.

Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.