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RE: XML is text-only ... why?

• From: "Michael Kay" <mike@s...>
• To: "'Costello, Roger L.'" <costello@m...>,<xml-dev@l...>
• Date: Wed, 26 Sep 2007 14:51:55 +0100

> ------------------------------------
> DECLARING AN ELEMENT'S DATATYPE IN A SCHEMA
> 
> Consider an XML Schema that declares the element <x> as an integer:
> 
>     <element name="x" type="integer"/>
> 
> This is not stating: 
> 
>     "The value of the element x in an XML instance document 
> is an integer." 
> 
> Rather, it is stating: 
> 
>     "The value of the element x in an XML instance document 
> may be converted to an integer."

Actually, it's saying two things:

(a) an instance document is invalid if the value cannot be converted to an
integer

(b) in the PSVI produced as the output of schema validation, the (typed)
value of the element information item will be (=will have been converted to)
an integer

Michael Kay
http://www.saxonica.com

• References:
  • XML is text-only ... why?
    • From: "Costello, Roger L." <costello@m...>