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   Re: XML trade off 1 - DTD vs XML Schema

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  • From: MURATA Makoto <murata.makoto@fujixerox.co.jp>
  • To: xml-dev@ic.ac.uk
  • Date: Thu, 12 Aug 1999 18:49:27 +0900

Paul Prescod <paul@prescod.net> wrote:

>Why bother sending any schema information *at all*? If the first system
>has the schema and the document, why doesn't it just validate before
>passing the information to the second system? If the second system,
>conversely, can only deal with information that adheres to certain
>rules, then why wouldn't it supply the schema itself. It knows what
>those rules are!

The current working draft of XSDL introduced "information set contribution";  
a *lot* of information in schemata is exposed to application programs.  Therefore, 
you need to use a schema-ware processor and download the schema.  Moreover, you 
need some new APIs which can capture "information set contribution".  Otherwise, 
you cannot really use XSDL.

Fuji Xerox Information Systems
Tel: +81-44-812-7230   Fax: +81-44-812-7231
E-mail: murata@apsdc.ksp.fujixerox.co.jp

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