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RE: [xml-dev] NVDL: A Disruptive Technology

Because if all other things are equal, skills and predispositions of the
users aren't.  A single validation presumes a single class of users at a
single level of complexity.  

Validation of the instance per se varies for some definition of validation,


-----Original Message-----
From: Michael Kay [mailto:mike@saxonica.com] 
Sent: Monday, May 12, 2008 11:40 AM
To: Len Bullard; 'Jonathan Robie'
Cc: 'MURATA Makoto (FAMILY Given)'; 'Costello, Roger L.';
Subject: RE: [xml-dev] NVDL: A Disruptive Technology

> This isn't even hard.  XML is a metalanguage.

An XML schema defines rules for a class of XML documents.

A relational schema (create table, create type, etc) defines rules for a
class of SQL databases.

Where exactly do you see the difference?

Michael Kay

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