RE: [xml-dev] After XQuery, are we done?

> Are you really asking 
> for a way to
> model inter-document (data instance) relationships? 

Yes, I think so. Something like XML Schema uniqueness and referential
constraints applied over a document collection. I'm not entirely sure that
the RDBMS approach of modelling relationships only as constraints is ideal -
for example there can be a relationship even when there is no constraint -
but it's a start.

Michael Kay