nice EDBT keynote talk yesterday: Val Tannen

Hi all,
 Val Tannen gave a really nice (=tidy :-)) keynote at the EDBT 
conference yesterday, on "Provenance for Database Transformations".

For those of you who are famliar with "annotation polynomials"-- this 
was a tidied-up version of that material, pushed a bit further still, 
which made it interesting.

Val promised to post the slides on his web page, but I suspect you'll 
need to ping him if you want to see them...

regards, -Paolo