Querying past versions of data in a distributed database
US7552149B2 · kind B2 · utility
6Cited by
57References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2004 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Aug 27, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99954
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Past versions of data in a distributed database system comprising multiple databases and associated database servers are queried using temporal database access mechanisms, where a request for data in a past state from a “remote” database can be received at a “local” database server and relevant portions of the request are passed to the remote server for processing. The processing performed by the remote server includes returning the requested data in the specified past state to the local server, or at least with enough information to reconstruct the data into the past state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.