Version control based on a dual-range validity model
US9811560B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2015 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Jul 12, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/2322
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques related to version control based on a dual-range validity model are disclosed. In an embodiment, an online analytical processing (OLAP) server stores a plurality of version records describing versions of a data item. A version record may describe any open transactions for a version of the data item. The version record may specify a commit timestamp for the data item at a database and a valid timestamp at least as great as the commit timestamp. The commit timestamp and the valid timestamp may specify a validity range. The version record may also specify an expiration timestamp, which along with the valid timestamp may specify an unresolved range. The OLAP server may also identify a valid version of the data item for a query timestamp that corresponds to a query for particular data in the data item and that falls within either the validity range or the unresolved range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.