You can mix and match. It's only the data values that must match. However,
they are matched as typed values, not as strings, so you can't match an
attribute of type xs:date to an element of type xs:string.

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

> -----Original Message-----
> From: dave [mailto:ceek63@y...] 
> Sent: 15 November 2007 03:27
> To: xml-dev@l...
> Subject: [xml-dev] key and keyref matching in xsd 1.0..
> 
> 
> I know that data types must match for 'key' and 'keyref' 
> xpath 'fields'. Should they match in terms of 'element' or 
> 'attribute' type as well?
> 
> i.e. say I have attributes 'a', 'b', and element 'c'
> in the selector 'fields' of key definition. Should I also 
> have 2 attributes and 1 element of same data types (of Key) 
> in the 'keyref' as well? OR can I mix and match (i.e. can I 
> map these 2 attrs in Key to 2 elements in keyref?).
> 
> -D
> 
> 
>       
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