It is because of ________________ that enables OLAP to achieve great performance for a query.

Options
- Aggregation
- Composition
- Dice
- Hybrid

CORRECT ANSWER : Aggregation

Discussion Board
OLAP

Aggregations are built from the fact table by changing the granularity on specific dimensions and aggregating up data along these dimensions. The number of possible aggregations is determined by every possible combination of dimension granularities. Aggregations enable OLAP to achieve great performance for a query.

Prajakta Pandit 03-30-2017 05:28 AM

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