• From: "Michael Kay" <mike@s...>
• To: <noah_mendelsohn@u...>
• Date: Wed, 10 Jan 2007 17:49:02 -0000

> I mostly agree.  On the other hand, I note from the "Design 
> Principles" 
> section of the  XML Schema Requirements [1]:
> 
> "The XML schema language shall be [...] more expressive than 
> XML DTDs; "
> 

Even given that requirement, it could have recognized that its quite
possible to do validation without doing default value expansion: the process
model could have separated things more. Many transformations want to know
that the input is valid, but want to leave values that are absent in the
input as absent in the output.

Michael Kay
http://www.saxonica.com/

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