Computer Science · Data Warehousing
Consider a data warehouse storing bond yield data where users frequently pivot views from daily to monthly aggregates. Which OLAP operation conceptually best describes this shift while preserving the underlying multi-dimensional structure?
- 1Dice, which selects a sub-cube across multiple dimensions
- 2Roll-up, which aggregates data to a higher level in a hierarchy✓
- 3Drill-down, which increases granularity within a hierarchy
- 4Slice, which removes a dimension to focus on a subset
Correct answer
Roll-up, which aggregates data to a higher level in a hierarchy
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