Query based invalidation subscription
US7962481B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2004 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Apr 2, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/24568
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A query result set is an example of a type of body of data whose content is defined by a query. Modifications to a database can change the result of a query and therefore what the content of such a body of data, such as a result set, should be. Active Queries is an approach that enables a database server to detect database changes that alter the result of a query registered for a client and to notify a client of those changes. The notifications may be sent to, for example, a cache manager responsible for maintaining coherency of a result set cache generated by the query. The notification notifies the cache manager of when and/or what changes are needed to maintain the coherency of the cache.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.