Inventor · disambiguated record
Chandrasekaran Mohan
Also filed as: MOHAN CHANDRASEKARAN
65 granted patents·1 pending application·5,764 citations·filing 1987–2019
99Inventor score
Top patents by PatentIndex Score
66 records- 0199US5551027AMulti-tiered indexing method for partitioned dataIBM·Filed 1995·Granted Aug 27, 1996·652 cites·11 claims
- 0298US9547659B1Reducing the cost of update, delete, and append-only insert operations in a databaseIBM·Filed 2015·Granted Jan 17, 2017·28 cites·1 claims
- 0398US5170480AConcurrently applying redo records to backup database in a log sequence using single queue server per queue at a timeIBM·Filed 1989·Granted Dec 8, 1992·404 cites·5 claims
- 0497US5960194AMethod for generating a multi-tiered index for partitioned dataIBM·Filed 1996·Granted Sep 28, 1999·357 cites·3 claims
- 0597US5327556AFast intersystem page transfer in a data sharing environment with record lockingIBM·Filed 1993·Granted Jul 5, 1994·238 cites·12 claims
- 0696US6453325B1Method and means for backup and restoration of a database system linked to a system for filing dataIBM·Filed 1997·Granted Sep 17, 2002·317 cites·11 claims
- 0796US5280612AMultiple version database concurrency control systemIBM·Filed 1991·Granted Jan 18, 1994·321 cites·19 claims
- 0895US5537574ASysplex shared data coherency methodIBM·Filed 1992·Granted Jul 16, 1996·253 cites·17 claims
- 0995US5465328AFault-tolerant transaction-oriented data processingIBM·Filed 1994·Granted Nov 7, 1995·250 cites·10 claims
- 1094US5551046AMethod for non-hierarchical lock management in a multi-system shared data environmentIBM·Filed 1994·Granted Aug 27, 1996·209 cites·6 claims
- 1194US5440727AAsynchronous replica management in shared nothing architecturesIBM·Filed 1994·Granted Aug 8, 1995·232 cites·21 claims
- 1294US5408653AEfficient data base access using a shared electronic store in a multi-system environment with shared disksIBM·Filed 1992·Granted Apr 18, 1995·116 cites·12 claims
- 1394US5280611AMethod for managing database recovery from failure of a shared store in a system including a plurality of transaction-based systems of the write-ahead logging typeIBM·Filed 1991·Granted Jan 18, 1994·234 cites·11 claims
- 1493US5557791AOuter join operations using responsibility regions assigned to inner tables in a relational databaseIBM·Filed 1994·Granted Sep 17, 1996·89 cites·30 claims
- 1593US5493668AMultiple processor system having software for selecting shared cache entries of an associated castout class for transfer to a DASD with one I/O operationIBM·Filed 1992·Granted Feb 20, 1996·187 cites·35 claims
- 1693US5241648AHybrid technique for joining tablesIBM·Filed 1990·Granted Aug 31, 1993·134 cites·5 claims
- 1791US7395258B2System and method for adaptive database cachingIBM·Filed 2004·Granted Jul 1, 2008·68 cites·25 claims
- 1891US5455946AMethod and means for archiving modifiable pages in a log based transaction management systemIBM·Filed 1993·Granted Oct 3, 1995·162 cites·6 claims
- 1989US7945577B2System and method for adaptive database cachingIBM·Filed 2008·Granted May 17, 2011·26 cites·2 claims
- 2088US11360998B2Database management system and method of operationIBM·Filed 2019·Granted Jun 14, 2022·4 cites·6 claims
- 2188US11263235B2Database management system and method of operationIBM·Filed 2019·Granted Mar 1, 2022·4 cites·8 claims
- 2288US5123104AMethod and apparatus for concurrent modification of an index tree in a transaction processing system utilizing selective indication of structural modification operationsIBM·Filed 1988·Granted Jun 16, 1992·100 cites·18 claims
- 2387US9772911B2Pooling work across multiple transactions for reducing contention in operational analytics systemsIBM·Filed 2015·Granted Sep 26, 2017·5 cites·20 claims
- 2487US5455944AMethod for managing logging and locking of page free space information in a transaction processing systemIBM·Filed 1993·Granted Oct 3, 1995·127 cites·5 claims
- 2587US4914569AMethod for concurrent record access, insertion, deletion and alteration using an index treeIBM·Filed 1987·Granted Apr 3, 1990·94 cites·10 claims
- 2686US10282363B2Database management system and method of operationIBM·Filed 2015·Granted May 7, 2019·4 cites·7 claims
- 2786US6173292B1Data recovery in a transactional database using write-ahead logging and file cachingIBM·Filed 1998·Granted Jan 9, 2001·108 cites·18 claims
- 2884US5276835ANon-blocking serialization for caching data in a shared cacheIBM·Filed 1990·Granted Jan 4, 1994·111 cites·9 claims
- 2983US9886347B2Data replication in a database management systemIBM·Filed 2015·Granted Feb 6, 2018·4 cites·18 claims
- 3083US5557792AEfficient data base access using a shared electronic store in a multi-system environment with shared disksIBM·Filed 1995·Granted Sep 17, 1996·63 cites·11 claims
- 3183US5247672ATransaction processing system and method with reduced lockingIBM·Filed 1990·Granted Sep 21, 1993·98 cites·16 claims
- 3281US9922077B2Reducing the cost of update, delete, and append-only insert operations in a databaseIBM·Filed 2016·Granted Mar 20, 2018·2 cites·1 claims
- 3381US5287473ANon-blocking serialization for removing data from a shared cacheIBM·Filed 1990·Granted Feb 15, 1994·96 cites·7 claims
- 3480US5333303AMethod for providing data availability in a transaction-oriented system during restart after a failureIBM·Filed 1991·Granted Jul 26, 1994·87 cites·6 claims
- 3579US10650011B2Efficient performance of insert and point query operations in a column storeIBM·Filed 2015·Granted May 12, 2020·3 cites·20 claims
- 3679US10176205B2Using parallel insert sub-ranges to insert into a column storeIBM·Filed 2016·Granted Jan 8, 2019·2 cites·18 claims
- 3779US5761660AComputer program product and program storage device for database access using a shared electronic store in a multi-system environment having shared disksIBM·Filed 1996·Granted Jun 2, 1998·74 cites·24 claims
- 3878US10261862B2Data replication in a database management systemIBM·Filed 2017·Granted Apr 16, 2019·2 cites·20 claims
- 3978US6009425ASystem and method for performing record deletions using index scansIBM·Filed 1996·Granted Dec 28, 1999·83 cites·30 claims
- 4078US5418940AMethod and means for detecting partial page writes and avoiding initializing new pages on DASD in a transaction management system environmentIBM·Filed 1993·Granted May 23, 1995·73 cites·11 claims
- 4175US6581205B1Intelligent compilation of materialized view maintenance for query processing systemsIBM·Filed 1999·Granted Jun 17, 2003·68 cites·36 claims
- 4274US9881049B2Reducing the cost of update, delete, and append-only insert operations in a databaseIBM·Filed 2016·Granted Jan 30, 2018·1 cites·1 claims
- 4373US5452430ASystem and method for storing persistent and non-persistent queued data and for recovering the persistent data responsive to a system restartIBM·Filed 1994·Granted Sep 19, 1995·60 cites·7 claims
- 4470US5495601AMethod to off-load host-based DBMS predicate evaluation to a disk controllerIBM·Filed 1992·Granted Feb 27, 1996·44 cites·16 claims
- 4569US5455942APartial page write detection for a shared cache using a bit pattern written at the beginning and end of each pageIBM·Filed 1992·Granted Oct 3, 1995·51 cites·9 claims
- 4667US10198186B2Systems, methods and computer program products memory space management for storage class memoryIBM·Filed 2015·Granted Feb 5, 2019·1 cites·16 claims
- 4767US9697242B2Buffering inserts into a column store databaseIBM·Filed 2014·Granted Jul 4, 2017·2 cites·20 claims
- 4867US5551031AProgram storage device and computer program product for outer join operations using responsibility regions assigned to inner tables in a relational databaseIBM·Filed 1995·Granted Aug 27, 1996·52 cites·22 claims
- 4966US9442914B2Using parallel insert sub-ranges to insert into a column storeIBM·Filed 2014·Granted Sep 13, 2016·1 cites·6 claims
- 5062US11853284B2In-place updates with concurrent reads in a decomposed stateIBM·Filed 2019·Granted Dec 26, 2023·0 cites·20 claims
Showing the top 50 of 66 patent records by PatentIndex Score.
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