Sometimes it's about extracting just the bits you need to query and
putting just those in some kind of database - relational, NoSQL,
SlightlySQL, triple store, XML-native, hybrid, whatever, with no hope
of reconstructing the original -- if you need the original, just use
it directly.

So for Roger I'd say that I think the direction I see is more hybrid
stores (from Virtuoso to MarkLogic..) and more variation being
acceptable as people come to recognize that different needs are best
served with different technologies.