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   RE: [xml-dev] R: [xml-dev] Number of active public XML schemas

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  • To: "Chizzolini Stefano" <chist@csb.it>, <xml-dev@lists.xml.org>
  • Subject: RE: [xml-dev] R: [xml-dev] Number of active public XML schemas
  • From: "Chiusano Joseph" <chiusano_joseph@bah.com>
  • Date: Wed, 3 Nov 2004 14:10:57 -0500
  • Thread-index: AcTBgAGQ5p5ZdKVMQY6fxZOZidJ7CAAWFluQ
  • Thread-topic: [xml-dev] R: [xml-dev] Number of active public XML schemas

[Jumping in at a random point in the thread]

In the US federal space, the following site has just been made publicaly available for the registration of XML schemas and other XML artifacts:


This is part of a site called Core.gov, which is run by the U.S. General Services Administration (GSA). I am not certain of the rules/policies for registration and discovery (as I am personally not directly involved with the project), but I understand it requires a login. I wanted to offer it up as an example of a place where one could see schemas registered in the future.

Kind Regards,
Joseph Chiusano
Booz Allen Hamilton
Strategy and Technology Consultants to the World

> -----Original Message-----
> From: Chizzolini Stefano [mailto:chist@csb.it] 
> Sent: Wednesday, November 03, 2004 3:36 AM
> To: xml-dev@lists.xml.org
> Subject: [xml-dev] R: [xml-dev] Number of active public XML schemas
> > -----Messaggio originale-----
> > Da:	Ronald Bourret [SMTP:rpbourret@rpbourret.com]
> > Inviato:	marted́ 2 novembre 2004 7.06
> > A:	'xml-dev'
> > Oggetto:	Re: [xml-dev] Number of active public XML schemas
> > 
> > Michael Kay wrote:
> > 
> 	>>Or because they [DTDs] are easier to understand, 
> 	>> 
> 	>> I have yet to see a DTD of more than trivial size 
> that is not totally
> 	>> impenetrable. And fragile too, if you are rash 
> enough to make a one line
> 	>> change that breaks an entire edifice of parameter 
> entities and conditional
> 	>> sections.
> 	>From personal experience, I'd have to say that complex 
> DTDs are 
> 	>slightly more penetrable than XSDs. As a user, I'm 
> usually just trying 
> 	>to find out one or two things and I can do this by 
> chasing entities
> 	>through the DTD with a text editor. I give up 
> completely when faced with 
> 	>a complex XSD document. (And in neither case can I get 
> an overall
> picture.)
> 	>Which raises an interesting question: Should there be 
> a non-XML syntax 
> 	>for XSDs like there is for RELAX NG? It's always been 
> an article of
> 	>faith for me that schemas should be written in XML, if 
> for no other
> 	>reason than not having to write another parser. But 
> one does have to 
> 	>wonder...
> I think there are some valid reasons for writing schemas in XML:
> seamlessness, elegance and power. Adopting a 
> "self-describing" language syntax avoids the users from 
> learning a new one and allows to leverage many existing 
> applications derived from the original spec (in this case, 
> XML spec); I mean, for example, the chance to dynamically 
> generate brand new schemas through XSL transformations.
> Stefano
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