Emulating a database system
US7155428B1 · kind B1 · utility
37Cited by
15References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2001 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Nov 13, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99934
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus provides for the extraction of environment information from a target database system. The environment information includes at least one of cost-related information and random sample statistics. The cost-related information and/or random sample statistics are imported to a test system, where the cost-related information and/or random sample statistics are used in query plan analysis by an optimizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.