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Re: XML Schemas and Database schemas

From: Henry S. Thompson <ht@cogsci.ed.ac.uk>
Date: 28 Mar 2000 08:25:08 +0100
To: Dmitry Nechayev <dmitryn@genesyslab.com>
Cc: "'www-xml-schema-comments@w3.org'" <www-xml-schema-comments@w3.org>
Message-ID: <f5b7lenh7zf.fsf@cogsci.ed.ac.uk>
My personal view is that XML Schema is _not_ about data modelling,
it's about flexible and powerful document structure definition.
Tree-structured documents are a good transfer medium for application
data, but XML Schema as such does not specify how to map from
application data to document and back.  A declarative specification
would be nice -- XSLT can manage one direction, via its element
extension mechanism.

The Cambridge Communiqué [1] gives a fuller version of this story.


[1] http://www.w3.org/TR/schema-arch
  Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
          W3C Fellow 1999--2001, part-time member of W3C Team
     2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
	    Fax: (44) 131 650-4587, e-mail: ht@cogsci.ed.ac.uk
		     URL: http://www.ltg.ed.ac.uk/~ht/
Received on Tuesday, 28 March 2000 02:25:11 UTC

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