Spool management and checkpointing in a multi-database system
US9183255B1 · kind B1 · utility
5Cited by
4References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 30, 2009 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Oct 12, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/24561
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A query is executed on a multi-database system. The multi-database system includes a first system database and a second system database. The query is partially executed on a first system database by generating a spool. It is determined that it is more efficient to store the spool on the second system database than to store the spool on the first system database, and in response the spool is stored on the second system database. The query execution is continued by accessing the spool on the second system database, completing execution of the query to produce a result, and storing the result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.