RE: [xml-dev]Changing Namespaces Between Specification Versions (was: XIN: XML implicit namespace definitions)

> I concur with Michael's observation, but I don't think a 
> version attribute alone is sufficient for good versioning.  

It's not enough on its own, but it gets you a long way, provided of course
that the value of the attribute is not just an opaque string but a pointer
to a set of rules that define the contract between sender and recipient
associated with that version.

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