Symmetrical data change tracking
US7096330B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2002 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Jul 31, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, computer program product, computer system and system that enable symmetrical data change tracking with respect to a set of data and a copy of the set of data, referred to as a snapshot or a second set of data. The data and the copy may be independently updated after the two sides are “split.” A join may be performed of the two sides of the split to resynchronize the data.For the first set of data, an accumulator map tracks changes to the first set of data and a volume map tracks changes to the first set of data with respect to a second set of data. For the second set of data (the snapshot), a second accumulator map tracks changes to the second set of data and a second volume map tracks changes to the second set of data with respect to the first set of data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.