Application of queries against incomplete schemas
US7464073B2 · kind B2 · utility
8Cited by
8References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2003 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | Jul 15, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99935
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An improved method, system, and article of manufacture for issuing a query against multiple data sources that may not each contain all the fields involved in the query is provided. A diverse query targeting the multiple data sources may be decomposed into individual query predicates. For each data source, an effective query may be generated by removing, from the diverse query, individual predicates involving fields not contained in the data source. Partial results received in response to issuing the effective queries against their corresponding data sources may be merged using any suitable technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.