Inventor · disambiguated record
David E. Simmen
Also filed as: SIMMEN DAVID · SIMMEN DAVID E · SIMMEN DAVID EVERETT
37 granted patents·5 pending applications·3,074 citations·filing 1995–2016
98Inventor score
Top patents by PatentIndex Score
42 records- 0197US6112198AOptimization of data repartitioning during parallel query optimizationIBM·Filed 1998·Granted Aug 29, 2000·335 cites·44 claims
- 0297US6092062ARelational database query optimization to perform query evaluation plan, pruning based on the partition propertiesIBM·Filed 1997·Granted Jul 18, 2000·334 cites·2 claims
- 0396US7080062B1Optimizing database queries using query execution plans derived from automatic summary table determining cost based queriesIBM·Filed 2000·Granted Jul 18, 2006·184 cites·57 claims
- 0495US11055300B2Real-time search techniquesSPLUNK INC·Filed 2016·Granted Jul 6, 2021·14 cites·26 claims
- 0595US8538985B2Efficient processing of queries in federated database systemsBETAWADKAR-NORWOOD ANJALI·Filed 2008·Granted Sep 17, 2013·106 cites·17 claims
- 0695US7958113B2Automatically and adaptively determining execution plans for queries with parameter markersIBM·Filed 2008·Granted Jun 7, 2011·62 cites·11 claims
- 0795US6081801AShared nothing parallel execution of procedural constructs in SQLIBM·Filed 1997·Granted Jun 27, 2000·269 cites·8 claims
- 0894US11188550B2Metrics store systemSPLUNK INC·Filed 2016·Granted Nov 30, 2021·11 cites·30 claims
- 0994US10452632B1Multi-input SQL-MRTERADATA US INC·Filed 2014·Granted Oct 22, 2019·34 cites·17 claims
- 1094US6345267B1Method and system for look ahead query evaluation planning based on interesting partition propertiesIBM·Filed 2000·Granted Feb 5, 2002·94 cites·11 claims
- 1191US7007006B2Method for recommending indexes and materialized views for a database workloadIBM·Filed 2002·Granted Feb 28, 2006·90 cites·14 claims
- 1291US6339769B1Query optimization by transparently altering properties of relational tables using materialized viewsIBM·Filed 1998·Granted Jan 15, 2002·190 cites·72 claims
- 1391US5873075ASynchronization of SQL actions in a relational database systemIBM·Filed 1997·Granted Feb 16, 1999·190 cites·40 claims
- 1490US7890491B1Query optimization technique for obtaining improved cardinality estimates using statistics on automatic summary tablesIBM·Filed 2000·Granted Feb 15, 2011·56 cites·18 claims
- 1590US6738755B1Query optimization method for incrementally estimating the cardinality of a derived relation when statistically correlated predicates are appliedIBM·Filed 2000·Granted May 18, 2004·82 cites·66 claims
- 1689US7716215B2System, method, and computer program product for progressive query processingIBM·Filed 2007·Granted May 11, 2010·32 cites·1 claims
- 1789US5960428AStar/join query optimizationIBM·Filed 1997·Granted Sep 28, 1999·119 cites·75 claims
- 1888US7783625B2Using data in materialized query tables as a source for query optimization statisticsIBM·Filed 2005·Granted Aug 24, 2010·19 cites·29 claims
- 1987US8386450B2Query optimization technique for obtaining improved cardinality estimates using statistics on pre-defined queriesIBM·Filed 2004·Granted Feb 26, 2013·40 cites·33 claims
- 2087US6625593B1Parallel query optimization strategies for replicated and partitioned tablesIBM·Filed 1999·Granted Sep 23, 2003·133 cites·108 claims
- 2184US7383246B2System, method, and computer program product for progressive query processingIBM·Filed 2003·Granted Jun 3, 2008·37 cites·1 claims
- 2283US5590324AOptimization of SQL queries using universal quantifiers, set intersection, and max/min aggregation in the presence of nullable columnsIBM·Filed 1995·Granted Dec 31, 1996·113 cites·38 claims
- 2382US5548758AOptimization of SQL queries using early-out join transformations of column-bound relational tablesIBM·Filed 1995·Granted Aug 20, 1996·91 cites·21 claims
- 2481US5619692ASemantic optimization of query order requirements using order detection by normalization in a query compiler systemIBM·Filed 1995·Granted Apr 8, 1997·103 cites·20 claims
- 2579US9558251B2Transformation functions for compression and decompression of data in computing environments and systemsSIMMEN DAVID·Filed 2012·Granted Jan 31, 2017·8 cites·25 claims
- 2676US6105020ASystem and method for identifying and constructing star joins for execution by bitmap ANDingIBM·Filed 1999·Granted Aug 15, 2000·74 cites·25 claims
- 2775US5548754AOptimization of SQL queries using early-out join transformationsIBM·Filed 1995·Granted Aug 20, 1996·61 cites·9 claims
- 2873US8140596B2System and method for the derivation and application of sub-iteration contexts in a transformation operation in a data integration systemBROWN ARMAGEDDON RHABDIZO·Filed 2009·Granted Mar 20, 2012·9 cites·24 claims
- 2973US6085189ADatabase system and method for supporting current of cursor updates and deletes from a select query from one or more updatable tables in single node and MPP environmentsIBM·Filed 1999·Granted Jul 4, 2000·38 cites·16 claims
- 3072US7185004B1System and method for reverse routing materialized query tables in a databaseIBM·Filed 2005·Granted Feb 27, 2007·5 cites·18 claims
- 3170US5615361AExploitation of uniqueness properties using a 1-tuple condition for the optimization of SQL queriesIBM·Filed 1995·Granted Mar 25, 1997·68 cites·15 claims
- 3268US9418069B2Extensible system and method for information extraction in a data processing systemLI YUNYAO·Filed 2010·Granted Aug 16, 2016·3 cites·20 claims
- 3364US5960426ADatabase system and method for supporting current of cursor updates and deletes from a select query from one or more updatable tables in single node and mpp environmentsIBM·Filed 1997·Granted Sep 28, 1999·39 cites·18 claims
- 3461US6993516B2Efficient sampling of a relational databaseIBM·Filed 2002·Granted Jan 31, 2006·16 cites·21 claims
- 3549US2008195577A1Automatically and adaptively determining execution plans for queries with parameter markersFAN WEI·Filed 2007·Application pending·0 cites
- 3645US8805834B2Extensible system and method for information extraction in a data processing systemLI YUNYAO·Filed 2012·Granted Aug 12, 2014·0 cites·9 claims
- 3745US2009327323A1Integrating Data Resources by Generic Feed AugmentationIBM·Filed 2008·Application pending·0 cites
- 3844US6513034B1Deriving uniqueness for indices on summary tablesIBM·Filed 1999·Granted Jan 28, 2003·15 cites·39 claims
- 3943US2008222087A1System and Method for Optimizing Query Access to a Database Comprising Hierarchically-Organized DataIBM·Filed 2006·Application pending·0 cites
- 4043US2007162425A1System and method for performing advanced cost/benefit analysis of asynchronous operationsIBM·Filed 2006·Application pending·0 cites
- 4139US2007214104A1Method and system for locking execution plan during database migrationMIAO BINGJIE·Filed 2006·Application pending·0 cites
- 4234US11023443B2Collaborative planning for accelerating analytic queriesTERADATA US INC·Filed 2016·Granted Jun 1, 2021·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →