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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. | |
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. | |
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 | |