Method and apparatus for performing an aggregate query in a database system
US5893090A · kind A · utility
89Cited by
3References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1997 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Jan 31, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99935
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a computer-implemented method for generating a response to an aggregate query request on a source database, a random sample of records is extracted from the source database to generate a sample database. Then an aggregate query is performed on the sample database to generate a sample result, and an estimate of the aggregate query request on the source database is derived from the sample result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.