Optimization of data repartitioning during parallel query optimization
US6112198A · kind A · utility
250Cited by
5References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1998 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Jun 29, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99933
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Query evaluation is optimized using parallel optimization techniques to make repartitioning more efficient. Efficiency is improved by recognizing the possible partitioning requirements for achieving parallelism for a query operation, and by recognizing when the partitioning property of data satisfies the partitioning requirements of a query operation. A data base management system in accordance with the invention uses parallel query processing techniques to optimize data repartitioning, or to avoid it altogether.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.