Question

What is roll-up?
A. Performs aggregation on a data cube
B. Navigates from less detailed data to more detailed data
C. Scrolls up the data
D. Moves from lower cuboid to upper​

Answer 1

Answer:

Roll-up data is the term given to the data that has been summarized. Before any raw data is purged, the minimum, maximum, and average values are calculated and can be preserved in several ways. Hourly data is the term given to data that is summarized, or rolled-up, every hour.