System and method for identifying and storing changes made to a table
US7333992B2 · kind B2 · utility
2Cited by
13References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 2003 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Oct 13, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99945
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A base table is scanned with a delete marker and an insert marker. The delete marker identifies a last change committed to the base table as part of a transaction prior to execution of a statement, and the insert marker identifies a last change committed to base table as part of the transaction during execution of the statement. The results of the delete marker scan are filtered with deletions stored in a delta table, and a delete table is populated with the filtered rows. The results of the insert scan are filtered with insertions stored in the delta table, and an insert table is populated with the filtered rows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.