Techniques to preserve data constraints and referential integrity in asynchronous transactional replication of relational tables
US7240054B2 · kind B2 · utility
38Cited by
2References
61Claims
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Key dates
| Filing date | Feb 27, 2004 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Jul 17, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99934
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An improved method and system for preserving data constraints during parallel apply in asynchronous transaction replication in a database system have been disclosed. The method and system preserves secondary unique constraints and referential integrity constraints, while also allowing a high degree of parallelism in the application of asynchronous replication transactions. The method and system also detects and resolves ordering problems introduced by referential integrity cascade deletes, and allows the parallel initial loading of parent and child tables of a referential integrity constraint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.