Computer Science · Data Warehousing
In managing slowly changing dimensions (SCD) for employee roles in a financial advisory data warehouse, which Type 2 SCD technique best supports tracking historical role changes without overwriting prior records, while allowing queries on both current and past states?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Using a surrogate key only for current records
- 2Aggregating changes into a single fact table entry
- 3Adding a new row with effective dates and a version flag✓
- 4Overwriting the current dimension row with the new value
Correct answer
Adding a new row with effective dates and a version flag
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