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Data Cube Aggregation

  • The lowest level of a data cube (base cuboid)
    • The aggregated data for an individual entity of interest
    • E.g., a customer in a phone calling data warehouse
  • Multiple levels of aggregation in data cubes
    • Further reduce the size of data to deal with
  • Reference appropriate levels
    • Use the smallest representation which is enough to solve the task
  • Queries regarding aggregated information should be answered using data cube, when possible

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