A data cube refers to a:

Select one:

a$.$ firm that collects data with the intention of reselling it to others.

b$.$ special database used to store data in OLAP reporting.

C$.$ secure$,$ cloud$-$based off$-$site location used for data storage, analysis, and reporting.

d$.$ combination of fields used to uniquely identify a record, and to relate separate tables in a database.

e$.$ heads$-$up display of critical indicators that allow managers to get a graphical glance at key performance metrics.