Method and mechanism for tracking dependencies for referential integrity constrained tables
US6714943B1 · kind B1 · utility
61Cited by
12References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2001 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Mar 2, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99948
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and mechanism for dependency tracking in a database system is disclosed. According to an embodiment, dependency tracking for a referentially constrained object is performed by tracking change or commit time values for key ranges as well as change or commit time values at various granularities in the database. The combination of various sets of change or commit values are employed to determine a single value representing all prior transactions or changes that an operation is dependent upon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.