David E. Simmen
37Patents
23h-index
62Co-inventors
88Inventor score
Filing activity: Feb 7, 1995 → Oct 31, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6092062A | Relational database query optimization to perform query evaluation plan, pruning based on the partition properties | Emerging Cross-Sectional Technologies | 252 | Expired |
| US6112198A | Optimization of data repartitioning during parallel query optimization | Emerging Cross-Sectional Technologies | 250 | Expired |
| US6081801A | Shared nothing parallel execution of procedural constructs in SQL | Emerging Cross-Sectional Technologies | 198 | Expired |
| US6339769B1 | Query optimization by transparently altering properties of relational tables using materialized views | Emerging Cross-Sectional Technologies | 144 | Expired |
| US5873075A | Synchronization of SQL actions in a relational database system | Emerging Cross-Sectional Technologies | 135 | Expired |
| US7080062B1 | Optimizing database queries using query execution plans derived from automatic summary table determining cost based queries | Emerging Cross-Sectional Technologies | 130 | Expired |
| US8538985B2 | Efficient processing of queries in federated database systems | Physics | 101 | Active |
| US6625593B1 | Parallel query optimization strategies for replicated and partitioned tables | Emerging Cross-Sectional Technologies | 82 | Expired |
| US5960428A | Star/join query optimization | Emerging Cross-Sectional Technologies | 76 | Expired |
| US5590324A | Optimization of SQL queries using universal quantifiers, set intersection, and max/min aggregation in the presence of nullable columns | Emerging Cross-Sectional Technologies | 73 | Expired |
| US5548758A | Optimization of SQL queries using early-out join transformations of column-bound relational tables | Emerging Cross-Sectional Technologies | 73 | Expired |
| US5619692A | Semantic optimization of query order requirements using order detection by normalization in a query compiler system | Emerging Cross-Sectional Technologies | 71 | Expired |
| US6345267B1 | Method and system for look ahead query evaluation planning based on interesting partition properties | Emerging Cross-Sectional Technologies | 58 | Expired |
| US7007006B2 | Method for recommending indexes and materialized views for a database workload | Emerging Cross-Sectional Technologies | 51 | Expired |
| US6105020A | System and method for identifying and constructing star joins for execution by bitmap ANDing | Emerging Cross-Sectional Technologies | 51 | Expired |
| US5615361A | Exploitation of uniqueness properties using a 1-tuple condition for the optimization of SQL queries | Emerging Cross-Sectional Technologies | 44 | Expired |
| US6738755B1 | Query optimization method for incrementally estimating the cardinality of a derived relation when statistically correlated predicates are applied | Emerging Cross-Sectional Technologies | 41 | Expired |
| US5548754A | Optimization of SQL queries using early-out join transformations | Emerging Cross-Sectional Technologies | 41 | Expired |
| US7958113B2 | Automatically and adaptively determining execution plans for queries with parameter markers | Physics | 40 | Active |
| US7890491B1 | Query optimization technique for obtaining improved cardinality estimates using statistics on automatic summary tables | Physics | 37 | Active |
| US8386450B2 | Query optimization technique for obtaining improved cardinality estimates using statistics on pre-defined queries | Physics | 31 | Active |
| US10452632B1 | Multi-input SQL-MR | Electricity | 27 | Active |
| US5960426A | Database 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 environments | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7383246B2 | System, method, and computer program product for progressive query processing | Emerging Cross-Sectional Technologies | 23 | Expired |
| US7716215B2 | System, method, and computer program product for progressive query processing | Emerging Cross-Sectional Technologies | 22 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.