Enhancements to the bitemporal model support: integrity constraints
summary
An open-source bitemporal layer for Postgres implements asserted-versioning time domains, an interval algebra and five temporal operations (insert, update, correction, inactivate, delete), plus exclusion constraint + GiST for PK/uniqueness. It adds a disjoint rectangles algorithm to validate temporal foreign keys by decomposing bitemporal regions, introduces bulk insert/update-as-SELECT, fixes transactional-now edge cases, and measures ~40% storage overhead with typical workloads and query latencies in the tens of milliseconds; foreign-key wiring and some edge cases remain being finalized.
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chapters (15)
- 0:00Start
- 6:53Summary
- 9:00Overview of B temporal Operations
- 16:50Bitemporal Constraints
- 19:31Defining foreign Key Constraint
- 22:26How a Validation Function Should Work?
- 23:14Types of Bitemporal Queries
- 25:56Defining Time Regions For Updates
- 29:24Using Rectangle sets
- 33:50Bulk Operations
- 35:15Consistent Transactional Behavior
- 37:26Corrected Behavior of UPDATE/CORRECTION
- 38:55High-level Functions
- 39:17Performance
- 42:09Bitemporal Data: Making It Happen in Postgres
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