Using query expression signatures in view matching
US7599925B2 · kind B2 · utility
22Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2005 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | Apr 3, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99934
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for optimizing queries against a database is described. The system comprises a memo structure that encodes a plurality of query expressions. The system also includes a signature mechanism that enables an assignment of the query expressions into equivalence classes. Methods of using such a system are additionally provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.