RE: [xml-dev] How to Unique contraint

> 
> Does anybody know how to do this so it looks something like 
> the following INVALID constraint, but I hope you get the picture.
> 
> <xs:unique name="port">
> 	<xs:selector xpath="anElement"/>
> 	<xs:field xpath="@debug-port | @port"/> </xs:unique>
> 

What makes you think this constraint is invalid? It looks OK to me.

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