Retrieval is very fast through data cubes because ________.
A) data cubes use a separate server which is tuned for fast retrieval and reporting
B) data are already grouped in logical dimensions, such as sales by product, city, region, and country
C) data cubes represent information in the form of objects, and use object-oriented programming languages to access them
D) data cubes organize data by attaching XML tags to them

Question

Quizplus · Accepted Answer

Data cubes are pre-aggregated and organized by logical dimensions such as time, location, and product. This makes it easy to retrieve specific information quickly, without having to query raw data.

Retrieval Is Very Fast Through Data Cubes Because ________