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RE: Xml is _not_ self describing

• To: 'Al Snell' <alaric@a...>, Gavin Thomas Nicol <gtn@r...>
• Subject: RE: Xml is _not_ self describing
• From: "Dinculescu, Christiana" <Dinculc@n...>
• Date: Thu, 17 Jan 2002 12:21:01 -0500
• Cc: The Deviants <xml-dev@l...>

Do you know if there are "tools" or something, to convert from ASN.1 to XML schema?

Cristiana

-----Original Message-----
From:   Al Snell [mailto:alaric@a...]
Sent:   Thursday, January 17, 2002 10:53 AM
To:     Gavin Thomas Nicol
Cc:     The Deviants
Subject:        Re: Xml is _not_ self describing

On Thu, 17 Jan 2002, Gavin Thomas Nicol wrote:

> I agree that XML has practical benefits... but I think the cause is
> more from "standardization" (minimal level of interoperability as
> Marton says), "network effects", "application", and "tribal knowledge"
> than from inherent benefits of the syntax.
>
> FWIW. I also believe in "the right syntax for the job".

One of the nice things about ASN.1 is that instead of (say) an XML schema
you specify an "abstract syntax", which is basically a data model, and
then use any of a library of "transfer syntaxes" which map from that
abstract syntax to strings of bits.

There are many binary transfer syntaxes, and textual transfer syntaxes are
being added due to the recent wave of interest in them triggered by XML.

ABS

--
                               Alaric B. Snell
 http://www.alaric-snell.com/  http://RFC.net/  http://www.warhead.org.uk/
   Any sufficiently advanced technology can be emulated in software




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