Managing a multi-version database
US9268804B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2013 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | May 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/1873
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Managing different versions of a data record is provided. A mapping is maintained between a version-independent logical record identifier and a version-dependent physical record row identifier that correspond to each data record within a plurality of data records of a data table using a logical record identifier to physical record row identifier indirection mapping table. Entries within leaf pages of an index associated with the data table are updated to point to the version-independent logical record identifier corresponding to a data record instead of pointing to the version-dependent physical record row identifier corresponding to the data record. The logical record identifier to physical record row identifier indirection mapping table is updated in response to performing an operation on the data record instead of updating the entries within the leaf pages of the index associated with the data table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.