Explore topic-wise MCQs in Database.

This section includes 41 Mcqs, each offering curated multiple-choice questions to sharpen your Database knowledge and support exam preparation. Choose a topic below to get started.

1.

Business Intelligence (BI) systems do obtain their data by which of the following means?

A. Read and process data from an operational database
B. Process transactions
C. Process extracts from operational databases
D. Process data purchased from data vendors
Answer» C. Process extracts from operational databases
2.

Which of the following are done by Business Intelligence (BI) systems?

A. Analyze past and current activities only
B. Process and record transactions only
C. Both of the above are correct.
D. Neither of the above is correct.
Answer» C. Both of the above are correct.
3.

A BI reporting system does ________ .

A. create meaningful information
B. deliver information to users on a timely basis
C. use statistical procedures to predict future events
D. use disparate data sources
Answer» D. use disparate data sources
4.

Business Intelligence (BI) reporting systems do which of the following operations?

A. Filter data
B. Group data
C. Modify data
D. Both filter and group data
Answer» D. Both filter and group data
5.

Which of the following is a component of a data warehouse?

A. Data extraction/cleaning/preparation programs
B. Data warehouse data
C. Data metadata
D. None of the above are data warehouse components.
Answer» D. None of the above are data warehouse components.
6.

Which of the following is a reason that operational data are difficult to read?

A. Non-duplicated data
B. Dirty data
C. Missing values
D. Non-integrated data
Answer» B. Dirty data
7.

The reports generated by a reporting system are usually delivered in which of the following media?

A. Web portal
B. Commercial courier service
C. Digital dashboard
D. E-Mail
Answer» C. Digital dashboard
8.

The term neural networks as used in data mining is a misnomer.%!

A. True
B. False
Answer» B. False
9.

OLAP uses measures, dimensions and associations.%!

A. True
B. False
Answer» C.
10.

Most operational databases can be used for many BI applications.%!

A. True
B. False
Answer» C.
11.

Data warehouse data are usually normalized.%!

A. True
B. False
Answer» C.
12.

Business Intelligence (BI) reporting systems are used to make sophisticated mathematical and statistical calculations in order to prepare reports based on the data.%!

A. True
B. False
Answer» C.
13.

Report types include static, dynamic, query and OLAP.%!

A. True
B. False
Answer» B. False
14.

Business Intelligence (BI) systems fall into two broad categories: reporting and data warehousing.%!

A. True
B. False
Answer» C.
15.

OnLine Analytical Processing (OLAP) is a BI reporting system.%!

A. True
B. False
Answer» B. False
16.

BI reporting systems summarize the current status of business activities in order to predict future activities.%!

A. True
B. False
Answer» C.
17.

In a common form of RFM analysis, customers are sorted in five groups and given a score of 1 to 5 depending on their group.%!

A. True
B. False
Answer» B. False
18.

A data warehouse is a database system that is optimized for operational transaction processing.%!

A. True
B. False
Answer» C.
19.

A data mart is a collection of data that, while smaller than a data warehouse, still addresses the entire business.%!

A. True
B. False
Answer» C.
20.

The delivery function of a report management system allows reports to be delivered via e-mail, via the Web, via XML Web services, via hand delivery and other delivery means.%!

A. True
B. False
Answer» C.
21.

RFM analysis is a BI reporting system.%!

A. True
B. False
Answer» B. False
22.

Data Mining uses simple arithmetic techniques such as sums, averages, and groupings to perform what-if analyses, to make predictions, and to facilitate decision making.%!

A. True
B. False
Answer» C.
23.

Market basket analysis primarily uses the technique of conditional probabilities.%!

A. True
B. False
Answer» C.
24.

In unsupervised data mining, explanations are created after patterns are found.%!

A. True
B. False
Answer» B. False
25.

The data warehouse DBMS needs to be the same DBMS used for the operational database.%!

A. True
B. False
Answer» C.
26.

Business Intelligence (BI) systems do not obtain data from operational databases.%!

A. True
B. False
Answer» C.
27.

Formatting the report is part of authoring a report.%!

A. True
B. False
Answer» B. False
28.

A report generated by a reporting system is delivered to the appropriate users via a user-accessed Web site. This system uses which of the following report modes?%!

A. Push
B. Pull
C. RFM
D. OLAP
Answer» C. RFM
29.

*/*_Which of the following is an unsupervised data mining technique??

A. Cluster analysis only
B. Regression Analysis only
C. RFM Analysis only
D. Both Regression Analysis and RFM Analysis
Answer» B. Regression Analysis only
30.

*/*_Which of the following is not a component of a data warehouse??

A. Data extraction/cleaning/preparation programs
B. Data warehouse data
C. Data metadata
D. None of the above are data warehouse components.
Answer» D. None of the above are data warehouse components.
31.

*/*_We have done an RFM analysis on our customer data. Mary Jones has a score of "1 1 5". This series means that Mary ________ .?

A. Has ordered recently, orders frequently, and places a large order when she orders.
B. Hasn't ordered recently, orders infrequently, but places a large order when she orders.
C. Has ordered recently, orders frequently, but doesn't place a large order when she orders
D. Hasn't ordered recently, orders infrequently, and doesn't place a large order when she orders.
Answer» D. Hasn't ordered recently, orders infrequently, and doesn't place a large order when she orders.
32.

*/*_A report generated by a reporting system is delivered to the appropriate users via a user-accessed Web site. This system uses which of the following report modes??

A. Push
B. Pull
C. RFM
D. OLAP
Answer» C. RFM
33.

_ Data mining applications are used accomplish which of the following tasks?$?

A. Process transactions only
B. Do RFM analysis only
C. Do what-if analysis only
D. Do both RFM and what-if analysis
Answer» D. Do both RFM and what-if analysis
34.

_ Business Intelligence (BI) reporting systems cannot do which of the following operations?$?

A. Filter data
B. Group data
C. Modify data
D. Both filter and group data
Answer» D. Both filter and group data
35.

_ One popular classification technique in Business Intelligence (BI) reporting is ________ .$?

A. cluster analysis only
B. regression analysis only
C. RFM analysis only
D. both cluster analysis and regression analysis
Answer» D. both cluster analysis and regression analysis
36.

__The "curse of dimensionality" relates to which problem of using operational data for BI reporting?__

A. Dirty data
B. Inconsistent data
C. Too much data
D. Non-integrated data
Answer» D. Non-integrated data
37.

The reports generated by a reporting system are usually not delivered in which of the following media?$?

A. Web portal
B. Commercial courier service
C. Digital dashboard
D. E-Mail
Answer» C. Digital dashboard
38.

We have Market Basket data for 1,000 rental transactions at a Video Store. There are for videos for rent -- Video A, Video B, Video C and Video D. The probability that both Video C and Video D are rented at the same time is known as ________ .$?

A. the basic probability
B. support
C. lift
D. confidence
Answer» C. lift
39.

We have Market Basket data for 1,000 rental transactions at a Video Store. There are four videos for rent -- Video A, Video B, Video C and Video D. The probability that Video D will be rented given that Video C has been rented is known as ________ .$?

A. the basic probability
B. support
C. lift
D. confidence
Answer» E.
40.

Business Intelligence (BI) systems do not obtain their data by which of the following means?$?

A. Read and process data from an operational database
B. Process transactions
C. Process extracts from operational databases
D. Process data purchased from data vendors
Answer» C. Process extracts from operational databases
41.

RFM analysis uses customer's purchasing patterns to ________ .

A. record transactions
B. analyze and rank customers
C. predict future sales using regression techniques
D. perform OLAP
Answer» C. predict future sales using regression techniques