Because of the various problems with operational data

7) Because of the various problems with operational data, large organizations choose to extract
operational data and typically create and staff a group of people who manage and run a(n)
________.
A) OLAP cube
B) neural network
C) data warehouse
D) Web server
Answer: C
AACSB: Information Technology
Difficulty: Easy
Course LO: Compare and contrast different business intelligence systems
Chapter LO: 3
8) ________ records the source, format, assumptions and constraints, and other facts about the
data.
D
AACSB: Information Technology
Difficulty: Easy
Course LO: Compare and contrast different business intelligence systems
Chapter LO: 3
9) Problematic operational data are termed ________.
C
AACSB: Information Technology
Difficulty: Easy
Course LO: Compare and contrast different business intelligence systems
Chapter LO: 3
10) ________ is a term that refers to the level of detail represented by the data.
A
AACSB: Information Technology
Difficulty: Easy
Course LO: Compare and contrast different business intelligence systems
Chapter LO: 3
11) Which of the following statements is true about operational data?
11

A) It is always better to have data with too coarse a granularity than with too fine a granularity.
B) If the data granularity is too coarse, the data can be made finer by summing and combining.
C) Purchased operational data often contains missing elements.
D) Problematic operational data are termed rough data.
Answer: C
AACSB: Information Technology
Difficulty: Moderate
Course LO: Compare and contrast different business intelligence systems
Chapter LO: 3
12) Due to a phenomenon called the ________, the more attributes there are, the easier it is to
build a model that fits the sample data but that is worthless as a predictor.
B
AACSB: Information Technology
Difficulty: Easy
Course LO: Compare and contrast different business intelligence systems
Chapter LO: 3
13) A ________ takes data from the data manufacturers, cleans and processes the data, and
locates the data on the shelves.
C
AACSB: Information Technology
Difficulty: Easy
Course LO: Compare and contrast different business intelligence systems
Chapter LO: 3