Method and mechanism for dependency tracking for unique constraints
US6728719B1 · kind B1 · utility
46Cited by
17References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2001 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Jun 12, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99953
- 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 is performed for a uniqueness constrained object by tracking change or commit values for a key range associated with the uniqueness constrained object. For uniqueness constrained tables, this type of key range can be associated with a column or set of columns in the uniqueness constrained table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.