________ can be achieved by rolling up a data cube to the smallest level of aggregation needed,reducing the dimensionality,or dividing continuous measures into discrete intervals.
A) Data cleansing
B) Normalization
C) Clustering
D) Data reduction
E) Inferencing

Question

Quizplus · Accepted Answer

Data reduction is the process of reducing the volume of data by techniques such as rolling up, reducing dimensionality or dividing continuous measures into discrete intervals, while preserving the essential meaning of the data. Therefore, D is the best choice.

________ Can Be Achieved by Rolling Up a Data Cube