Re: XML Schema

[Harry George <hgg9140 seanet com>]

As you study XSchema, please keep in mind that a lot of folks who
like the general idea of "something better than DTD's" think XSchema
is an abomination.  Consider:
  http://www.oasis-open.org/committees/relax-ng/

This combination of TREX and RELAX has the attention of some heavy
hitters in the XML parsing world (e.g., James Clark, Norm Walsh).

Further if procedural/functional definition is needed, consider
XEXPR:
  http://www.w3.org/TR/xexpr/
 

On Sun, 02 Jan 2000, John Palmieri wrote:
> Date: Sun, 02 Jan 2000 03:10:08 +0000
> To: dia-list gnome org
> From: John Palmieri <johnp martianrock com>
> Reply-To: dia-list gnome org
> Sender: dia-list-admin gnome org
> Subject: XML Schema
>
> I'm getting a little bit of a feel for XML Schema's.  The
> documentation is
> littered with new terminology that takes a bit getting use to.  The
> examples look
> straight forward.  I think they are a better way to represent the
> shapes instead
> of DTD's.  I will work on moving the widget.dtd to UrShape.schema
> once the C++
> stuff James is doing hits the streets.  About the validator - I'm
> going to fiddle
> around with this (note the fiddle part).  Schema's is a whole other
> project and
> the specs are just way too complicated for us to be worrying about
> that.  If
> anything, I might be able to squeeze something out that is tailored
> to our
> purposes (implements only the types and tags that we use).  I
> suspect that libxml
> will include support for this in the future since it is very
> useful.  One thing
> that gets me is the regular expressions.  What notation of RE are
> they using?
> Perl uses different notation from python and lex.  Are their libs
> for this
> already? Well I don't think that we are going to have to use
> restrictions or
> unions or any of the more complex parts of the spec so I think we
> can just ignore
> them.  Well I'll create the schema file and see if I want to tackle
> validating it
> also.  If we get past that we can have it automagicly create a tree
> to conform to
> our mini-DOM interface.  Comments?
>
> -J5
>
>
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-- 
Harry George
hgg9140 seanet com