Execution of database queries including filtering
US6879977B2 · kind B2 · utility
11Cited by
23References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2001 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Apr 10, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99945
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A query processing system has a query processor and a data manager. The query processor calls the data manager to carry out data access for a query including a filtering operation. The data manager accesses the data in a set of data and before returning the data, initiates a callback to the query processor to determine if the located data meets the filtering criteria. Where the data does not satisfy the filtering criteria, the data manager seeks additional data in the set of data, without having to return the first located data to the query processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.