Inventor
MASAI KAZUO
JP19 patents
Patents
19 patentsUS5778388AJul 7, 1998
Method of processing a synchronization point in a database management system to assure a database version using update logs from accumulated transactions
HITACHI LTD174 citations99
US7031984B2Apr 18, 2006
Disaster recovery processing method and apparatus and storage unit for the same
HITACHI LTD64 citations98
US6101495AAug 8, 2000
Method of executing partition operations in a parallel database system
HITACHI LTD106 citations98
US5274809ADec 28, 1993
Task execution control method for a multiprocessor system with enhanced post/wait procedure
HITACHI LTD145 citations97
US6510428B2Jan 21, 2003
Method and system of database divisional management for parallel database system
HITACHI LTD72 citations96
US6192359B1Feb 20, 2001
Method and system of database divisional management for parallel database system
HITACHI LTD55 citations96
US5813005ASep 22, 1998
Method and system of database divisional management for parallel database system
HITACHI LTD85 citations96
US5065311ANov 12, 1991
Distributed data base system of composite subsystem type, and method fault recovery for the system
HITACHI LTD120 citations96
US5333314AJul 26, 1994
Distributed data base system of composite subsystem type, and method of fault recovery for the system
HITACHI LTD104 citations95
US4937784AJun 26, 1990
Distributed interactive processing method in complex system including plural work stations and plural host computers and apparatus using the same
HITACHI LTD118 citations95
US5890150AMar 30, 1999
Random sampling method for use in a database processing system and a database processing system based thereon
HITACHI LTD50 citations92
US5987462ANov 16, 1999
Parallel data base record distribution method and parallel data base management system
HITACHI LTD18 citations91
US7039660B2May 2, 2006
Disaster recovery processing method and apparatus and storage unit for the same
HITACHI LTD14 citations84
US6745191B2Jun 1, 2004
Parallel database record distribution method and parallel database management system
HITACHI LTD12 citations81
US7599910B1Oct 6, 2009
Method and system of database divisional management for parallel database system
HITACHI LTD7 citations74
US6584457B1Jun 24, 2003
Parallel data base record distribution method and parallel data base management system
HITACHI LTD6 citations72
US6169982B1Jan 2, 2001
Parallel data base record distribution method and parallel data base management system
HITACHI LTD8 citations72
US5717918AFeb 10, 1998
Method for concurrently performing a physical sequential scan of a database into a database buffer which is queued until a preceding scan is completed
HITACHI LTD4 citations60
US7225178B2May 29, 2007
Data structure in database, database system for managing database and database managing method and system
HITACHI LTD3 citations59