A Data Cube Refers to A

A data cube refers to a:

A) user who is in control of a database management system.
B) heads-up display of critical indicators that allow managers to get a graphical glance at key performance metrics.
C) special database used to store data in OLAP reporting.
D) firm that collects data with the intention of reselling it to others.
E) combination of fields used to uniquely identify a record, and to relate separate tables in a database.