OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.


Help: OASIS Mailing Lists Help | MarkMail Help



   Re: documenting schemas/DTDs

[ Lists Home | Date Index | Thread Index ]
  • From: "Thomas B. Passin" <tpassin@mitretek.org>
  • To: <xml-dev@ic.ac.uk>
  • Date: Fri, 19 Nov 1999 10:35:19 -0500

-----Original Message-----
From: edwsm@us.ibm.com <edwsm@us.ibm.com>

>There's another school which holds that "syntax IS semantics".
>A DTD for X.509 certificates allows me to express what parts of the
>certificate I consider required, what parts of the certificate I
>optional, as well as the legal forms of the parts themselves.
>I can tell whether or not a certificate is valid, and also *why* (e.g.
>signature algorithm name was provided, the "not after" date was
>I think that if I can answer "why" questions, I'm operating in the
>Meaning may only be conveyed (manifested?) in "running code or
>human-readable prose", but the meaning is latent in the syntax, and
>couldn't be conveyed if it wasn't already there.

You can tell if the "not after" date is valid or not (syntax), but you
can't tell for what reason it has been included at all, what role it
plays in the system (semantics).  The meaning  is not "latent in the
syntax" at all.

Tom Passin

xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@ic.ac.uk
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1
To unsubscribe, mailto:majordomo@ic.ac.uk the following message;
unsubscribe xml-dev
To subscribe to the digests, mailto:majordomo@ic.ac.uk the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa@ic.ac.uk)


News | XML in Industry | Calendar | XML Registry
Marketplace | Resources | MyXML.org | Sponsors | Privacy Statement

Copyright 2001 XML.org. This site is hosted by OASIS