System and method for providing a backup copy of a database
US5594900A · kind A · utility
108Cited by
16References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1995 |
| Grant date | Jan 14, 1997 |
| Priority date | — |
| Expiry date | Mar 22, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99953
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A backup method for a computer database system comprising maintaining a mirrored copy of the database at a remote location is characterized in that updates to the remote database data are delayed for a delay time greater than or equal to the upper limit on the data communication delay between the local location and the remote location and updates to a remote log for the database are executed after corresponding updates to a local log without said delay. In this way a consistent copy of the database may be recovered from the mirrored copy of the database and the remote log after destruction of the database system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.