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Consider the following descriptions of the OLAP operations in multidimensional data:
− The slice operation ..I.. one particular dimension from a given cube and provides a new sub-cube.
− Drill-down can be performed by ..II.. a concept hierarchy for a dimension.
− Roll-up can be performed by ...III... a concept hierarchy for a dimension.
− The pivot operation is also known as rotation. It ...IV... the data axes in view in order to provide an alternative presentation of data.
The correct words to fill in the gaps I, II, III and IV are, respectively,