[dsdl-discuss] Re: Usecase for DSDL

On Wed, 2002-07-17 at 15:07, Rick Jelliffe wrote:
> From: "Ann M Wrightson" <ann.wrightson@alphaxml.com>
>
> > You're perfectly right to ask me to expound ...
>
> Oh, sorry, I wasn't directing that question to you: it was just a general question,
> probably for RELAX NG people.
>
> I guess our story on substitution groups is that
> 1) it is syntactic sugar that does not add any power

Yes and something very close (and more flexible) may be achieved with
Relax NG by combining definitions with a combine attribute set to
"choice".

> 2) for processing using the susbstitution group name, we can do that by
> just adding a fixed attribute

Probably or even using one of the type annotation prosals for Relax NG.

I think that Ann is raising a general issue here against which it is
quite difficult to fight. People using W3C XML Schema as *the* schema
language for XML do not make the distinction between the limitations and
specificities of W3C XML Schema and the limitations of XML itself.

It's something which worries me a lot since quite a long time!

Eric
>
> Cheers
> Rick Jelliffe

-- 
See you in San Diego.
                               http://conferences.oreillynet.com/os2002/
------------------------------------------------------------------------
Eric van der Vlist       http://xmlfr.org            http://dyomedea.com
(W3C) XML Schema ISBN:0-596-00252-1 http://oreilly.com/catalog/xmlschema
------------------------------------------------------------------------
--
DSDL members discussion list
To unsubscribe, please send a message with the
command  "unsubscribe" to dsdl-discuss-request@dsdl.org
(mailto:dsdl-discuss-request@dsdl.org?Subject=unsubscribe)