When discussing OLAP, which operation provides a summarization of data, increasing the level of abstraction?
- Dice
- Drill-down
- Roll-up
- Slice
In OLAP, the "Roll-up" operation is used to provide a summarization of data, increasing the level of abstraction. It allows users to move from lower levels of detail to higher, more aggregated levels, simplifying complex data for higher-level analysis and reporting.
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