Inventor
KOO FRED
CA6 patents
Patents
6 patentsUS7587383B2Sep 8, 2009
Redundant join elimination and sub-query elimination using subsumption
IBM66 citations96
US5970495AOct 19, 1999
Method and apparatus for achieving uniform data distribution in a parallel database system
IBM192 citations96
US6438542B1Aug 20, 2002
Method of optimally determining lossless joins
IBM16 citations92
US6983275B2Jan 3, 2006
Optimizing database query by generating, determining the type of derived predicate based on monotonicity of the column generating expression for each remaining inequality predicate in the list of unexamined predicates
IBM37 citations91
US5878409AMar 2, 1999
Method and apparatus for implementing partial declustering in a parallel database system
IBM87 citations91
US6601063B2Jul 29, 2003
Method of optimally determining lossless joins
IBM2 citations62