The operation of moving from finer-granularity data to a coarser granularity (by means of aggregation) is called a ________.
A. Rollup
B. Drill down
C. Dicing
D. Pivoting
Answer:A
The operation of moving from finer-granularity data to a coarser granularity (by means of aggregation) is called a ________.
A. Rollup B. Drill down C. Dicing D. Pivoting