• To: "'Paul Sumner Downey'" <paul.downey@w...>,"'Bob Foster'" <bob@o...>
• Subject: RE: UPA and schema handling
• From: "Michael Kay" <michael.h.kay@n...>
• Date: Mon, 18 Oct 2004 10:24:23 +0100
• Cc: "'Ian Graham'" <ian.graham@u...>,<xml-dev@l...>
• In-reply-to: <41737A48.3080009@w...>
• Thread-index: AcS06xoDxXCKLTTJQRKG7gXdO72/kwACOdOA

> 
> It's also obvious that a processor using schema to build a 
> code model is 
>   able to ignore UPA and still get its work done.
> 

Only if its work is confined to giving a yes/no answer to the validity
question.

If the work is to associate types with individual element instances, then
UPA is rather important.

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

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