A recent release of Qlikview [www.qlikview.com] added a new feature called
"Direct Discovery"
[http://bi-review.blogspot.co.uk/2013/04/first-look-at-qlikview-direct-discovery.html]
, that allows Qlikview reports to directly access a database datasource
on-demand . Qlikview, by default, loads all required data up-front into its own
in-memory column-store