Re: analysis of YANG vs. RELAX NG
Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> Tue, 04 December 2007 07:25 UTC
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Date: Tue, 04 Dec 2007 08:25:31 +0100
From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: Ladislav Lhotka <lhotka@cesnet.cz>
Subject: Re: analysis of YANG vs. RELAX NG
Message-ID: <20071204072531.GA19235@elstar.local>
References: <474D9194.3060103@ericsson.com> <953beacc0711281025w4d993dd7u77d729111074496c@mail.gmail.com> <20071128.230244.254578150.mbj@tail-f.com> <63F8A418-6AF0-4205-ACC7-53A8C7BC6A73@osafoundation.org> <47512728.6040201@gmx.de> <517bf110712021242v43c462f0v86267f591e5cdfbd@mail.gmail.com> <47543B30.1060409@andybierman.com> <1196704923.5569.14.camel@missotis> <003801c835e7$4fefeb20$6801a8c0@oemcomputer> <1196722786.5835.57.camel@missotis>
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On Mon, Dec 03, 2007 at 11:59:46PM +0100, Ladislav Lhotka wrote: > I think it's a misunderstanding. I am not pleading for fuzzy (is it > approximately what "mushy" means?;-) data models, the models can and > should be simple and unambiguous, I am talking about additional > flexibility for model *designers*, i.e., straightforward means for > reusing and extending existing models into new models (also by adding > structure to former leaves, why not?), and here I think YANG is rather > rigid when compared to RELAX NG. The question whether it is a good idea to be able to turn a data containing XML element into a container element in a future revision of a data model is pretty much independent of the schema language. Several network management people believe that having XML elements that sometimes are containers and sometimes leafs does not help interoperability. In fact, we would likely require that any solution (e.g. XSD-+ or RELAX NG-+ extended subset languages) does have versioning rules attached that guarantee the same behaviour. /js -- Juergen Schoenwaelder Jacobs University Bremen gGmbH Phone: +49 421 200 3587 Campus Ring 1, 28759 Bremen, Germany Fax: +49 421 200 3103 <http://www.jacobs-university.de/>
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- Re: analysis of YANG vs. RELAX NG Juergen Schoenwaelder
- Re: analysis of YANG vs. RELAX NG Juergen Schoenwaelder
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- Re: analysis of YANG vs. RELAX NG Martin Bjorklund
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- Re: analysis of YANG vs. RELAX NG Rohan Mahy
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- Re: analysis of YANG vs. RELAX NG Juergen Schoenwaelder
- Re: analysis of YANG vs. RELAX NG Balazs Lengyel
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- Re: analysis of YANG vs. RELAX NG Andrew Newton
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- Re: analysis of YANG vs. RELAX NG Rohan Mahy
- Re: analysis of YANG vs. RELAX NG Balazs Lengyel
- Re: analysis of YANG vs. RELAX NG Rohan Mahy
- Re: analysis of YANG vs. RELAX NG Randy Presuhn
- Re: analysis of YANG vs. RELAX NG Juergen Schoenwaelder
- Re: analysis of YANG vs. RELAX NG Martin Bjorklund
- Re: analysis of YANG vs. RELAX NG Andy Bierman
- Re: analysis of YANG vs. RELAX NG Julian Reschke
- Re: analysis of YANG vs. RELAX NG Tim Bray
- Re: analysis of YANG vs. RELAX NG Ladislav Lhotka
- Re: analysis of YANG vs. RELAX NG Juergen Schoenwaelder
- Re: analysis of YANG vs. RELAX NG Ladislav Lhotka
- Re: analysis of YANG vs. RELAX NG Juergen Schoenwaelder
- Re: analysis of YANG vs. RELAX NG Andy Bierman
- Re: analysis of YANG vs. RELAX NG Ladislav Lhotka
- Re: analysis of YANG vs. RELAX NG Andy Bierman
- Re: analysis of YANG vs. RELAX NG Randy Presuhn
- RE: analysis of YANG vs. RELAX NG David Harrington
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- Re: analysis of YANG vs. RELAX NG Ladislav Lhotka
- Re: analysis of YANG vs. RELAX NG Juergen Schoenwaelder
- Re: analysis of YANG vs. RELAX NG Balazs Lengyel