Inventor
HADERLE DONALD J
US19 patents
Patents
19 patentsUS5455944AOct 3, 1995
Method for managing logging and locking of page free space information in a transaction processing system
IBM127 citations98
US6185699B1Feb 6, 2001
Method and apparatus providing system availability during DBMS restart recovery
IBM136 citations97
US6006220ADec 21, 1999
Determining the optimal access path for a query at execution time using an actual value for each variable in a query for estimating a filter factor
IBM119 citations97
US5940819AAug 17, 1999
User specification of query access paths in a relational database management system
IBM98 citations97
US5241648AAug 31, 1993
Hybrid technique for joining tables
IBM134 citations97
US6219660B1Apr 17, 2001
Access path selection for SQL with variables in a RDBMS
IBM103 citations96
US5940822AAug 17, 1999
Encoding method of members related by multiple concept or group hierarchies and identification of members in a corpus or a database that are descendants of one or more selected concepts or groups from the encoding
IBM63 citations96
US5581750ADec 3, 1996
System and method for improving data recovery performance
IBM81 citations96
US5561798AOct 1, 1996
Computer program product and program storage device for improving data recovery performance
IBM56 citations96
US5367675ANov 22, 1994
Computer automated system and method for optimizing the processing of a query in a relational database system by merging subqueries with the query
IBM219 citations96
US4961134AOct 2, 1990
Method for minimizing locking and reading in a segmented storage space
IBM65 citations95
US4933848AJun 12, 1990
Method for enforcing referential constraints in a database management system
IBM90 citations95
US4498145AFeb 5, 1985
Method for assuring atomicity of multi-row update operations in a database system
IBM147 citations95
US5133068AJul 21, 1992
Complied objective referential constraints in a relational database having dual chain relationship descriptors linked in data record tables
IBM107 citations94
US4716528ADec 29, 1987
Method for managing lock escalation in a multiprocessing, multiprogramming environment
IBM104 citations94
US4947320AAug 7, 1990
Method for referential constraint enforcement in a database management system
IBM101 citations93
US5845274ADec 1, 1998
Computer program product for avoiding complete index tree traversals in sequential and almost sequential index probes
IBM32 citations92
US5748952AMay 5, 1998
System and method for avoiding complete index tree traversals in sequential and almost sequential index probes
IBM20 citations92
US6289355B1Sep 11, 2001
Fast log apply
IBM44 citations91