Inventor · disambiguated record
Qi Cheng
Also filed as: CHENG QI · Cheng qi jian
13 granted patents·3 pending applications·159 citations·filing 2001–2017
91Inventor score
Top patents by PatentIndex Score
16 records- 0187US7917502B2Optimized collection of just-in-time statistics for database query optimizationIBM·Filed 2008·Granted Mar 29, 2011·22 cites·22 claims
- 0286US7945557B2Method, system, and program for query optimization with algebraic rulesIBM·Filed 2007·Granted May 17, 2011·16 cites·21 claims
- 0385US9727608B2Generating statistical views in a database systemCHENG QI·Filed 2012·Granted Aug 8, 2017·11 cites·20 claims
- 0484US7788241B2Method for reducing overhead of validating constraints in a databaseIBM·Filed 2006·Granted Aug 31, 2010·15 cites·19 claims
- 0582US7240078B2Method, system, and program for query optimization with algebraic rulesIBM·Filed 2003·Granted Jul 3, 2007·30 cites·17 claims
- 0678US7188116B2Method and apparatus for deleting data in a databaseIBM·Filed 2001·Granted Mar 6, 2007·33 cites·29 claims
- 0769US10157204B2Generating statistical views in a database systemIBM·Filed 2013·Granted Dec 18, 2018·2 cites·20 claims
- 0869US7966314B2System for aggregation subquery join eliminationIBM·Filed 2008·Granted Jun 21, 2011·4 cites·10 claims
- 0965US7275056B2System and method for transforming queries using window aggregationIBM·Filed 2003·Granted Sep 25, 2007·21 cites·45 claims
- 1058US8626744B2Executing CASE expressions containing subqueriesCHENG QI·Filed 2012·Granted Jan 7, 2014·1 cites·9 claims
- 1154US7454416B2Method for aggregation subquery join eliminationIBM·Filed 2003·Granted Nov 18, 2008·4 cites·5 claims
- 1253US10140330B2Data consistency maintenance for sequential requestsIBM·Filed 2017·Granted Nov 27, 2018·0 cites·6 claims
- 1352US2002174034A1Method and apparatus for a distributed web commerce systemIBM·Filed 2001·Application pending·0 cites
- 1450US2009024677A1System for reducing overhead of validating constraints in a databaseIBM·Filed 2008·Application pending·0 cites
- 1549US10129364B2Data consistency maintenance for sequential requestsIBM·Filed 2015·Granted Nov 13, 2018·0 cites·12 claims
- 1638US2002144157A1Method and apparatus for security of a network serverIBM·Filed 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →