Oracle-L: OT: move over CBO, make room for Leo!

From: Jacques Kilchoer <Jacques.Kilchoer_at_quest.com>
Date: Wed, 07 Aug 2002 14:38:21 -0800
Message-ID: <F001.004AE31D.20020807143821@fatcity.com>

I noticed a couple of interesting nuggets of information in this computerworld article about new db developments:

<<Thirty years ago, IBM researcher Pat Selinger invented "cost-based" query optimization...>> I did not know that.
<<Now Selinger, is leading an effort at IBM called Leo-for Learning Optimizer ... Rather then optimizing a query once, when it's compiled, Leo will watch production queries as they run and fine-tune them as it learns about data relationships and user needs. "It empirically derives interesting things about the data," Selinger says. For example, Leo would come to realize that a ZIP code can be associated with only one state, or that a Camry is made only by Toyota, even if those rules aren't specified in advance.>>

and
c) Two out of the three people mentioned in the article, Pat Selinger and Jennifer Widom, are women! I guess those "take your daughter to work" days are paying off. I'm happy to see more gender equality in computer science.

http://computerworld.com/databasetopics/data/software/story/0,10801,73164,00 .html

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Author: Jacques Kilchoer
INET: Jacques.Kilchoer_at_quest.com

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