RE: [xml-dev] Use xsd to specify multiple instances of existing element

["Michael Kay" <mike@saxonica.com>]

> > ...in XSD 1.0.  It's perfectly possible 1.1 isn't it?

Yes, in either of two ways. Either by defining an assertion on the type of
the containing element, or by using conditional type assignment (where the
type of the element depends on the values of its attributes).
> 
> 
> I think XSD 1.1 allows some of the solution.  But it seems 
> that assertions are not allowed on elements 

Assertions are defined on types, rather than elements, but that just means
you need to assign the element a distinguishing type.

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