Approximate NDV

This is just a temporary note (comments disabled) to make sure that any subscribers get a message that Amit Poddar has given me permission to publish his presentation on the 11g Approximate NDV. There are links to a white paper and the presentation slides on my posting about Hotsos 2009 where I saw him give the presentation.

Note – do not link back to this posting, I intend to delete it in a few days.