2014-01-04

Multi-temporal Features in Oracle 12c

Oracle 12c has a feature called Temporal Validity. With Temporal Validity you can add one or more valid time dimensions to a table using existing columns, […]
2013-01-03

Loading Historical Data Into Flashback Archive Enabled Tables

Oracle provides via OTN an import solution for FBA (Flashback Data Archive also known as Total Recall). The solution extends the SCN to TIMESTAMP mapping plus […]
2012-12-28

Joining Temporal Intervals Part 2

The solution I’ve provided in Joining Temporal Intervals produces wrong results if one or more temporal tables have gaps in their history or if disconnected intervals have […]
2012-12-27

Merging Temporal Intervals with Gaps

In Joining Temporal Intervals I explained how to join multiple temporal tables. The provided solution merges also temporal intervals but – as pointed out in that post […]
2012-12-24

Joining Temporal Intervals

From time to time a customer asks me how to join multiple tables with temporal intervals (e.g. defined by two columns such as valid_from and valid_to […]