A data mart usually can be constructed more rapidly and at lower cost than a data warehouse because:
A) it typically focuses on a single subject area or line of business.
B) all the information is historical.
C) it uses a web interface.
D) all of the information belongs to a single company.
E) it is open-source.

Question

Quizplus · Accepted Answer

A data mart is a subset of a data warehouse and typically focuses on a single subject area or business line. This targeted approach allows data marts to be constructed more rapidly and at a lower cost than a full data warehouse, which contains all the data across an organization. The other choices (B, C, D, E) do not accurately explain why a data mart can be constructed more rapidly and at a lower cost.

A Data Mart Usually Can Be Constructed More Rapidly and at Lower