Method for efficient evaluation of index screening predicates
US7480649B2 · kind B2 · utility
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Key dates
| Filing date | Jul 6, 2005 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | May 19, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99933
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques are provided for processing a query using an index. It is determined whether a number of consecutive keys that evaluate to a false-positive when applying a screening predicate in the query exceeds a false-positive predefined value. One or more keys in the index are skipped in response to determining that the number of consecutive keys exceeds the false-positive predefined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.