OLAP Queries: Aggregations, Cube Operator, and Optimizations

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Description

This lecture covers OLAP queries, including multidimensional data models, star schema, dimension hierarchies, and OLAP operations like roll-up, drill-down, and slicing. It also explores the CUBE operator, relational view of data cube, super-aggregates, and optimizations using bitmap indexes and join strategies.

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https://mediaspace.epfl.ch/media/0_vll5ae4i

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