Database - Database Design Using Normalization MCQs Part

1. Needing to using more complicated SQL in database applications is a(n) ________ of normalization.

A.
advantage
B.
disadvantage
C.
either an advantage or disadvantage
D.
neither an advantage nor disadvantage

 Answer Option B

2. Eliminating modification anomalies is a(n) ________ of normalization.

A.
advantage
B.
disadvantage
C.
either an advantage or disadvantage
D.
neither an advantage nor disadvantage

 Answer Option A

3. Multivalued dependencies should ________ be eliminated.

A.
always
B.
commonly
C.
seldom
D.
never

 Answer Option A

4. When assessing the table structure of an acquired set of tables with data, accessing the validity of possible referential integrity constraints on foreign keys is (part of) the:

A.
first step.
B.
second step.
C.
third step.
D.
fourth step.

 Answer Option C

5. Using the SQL GROUP BY phrase with a SELECT statement can help detect which of the following problems?

A.
The multivalue, multicolumn problem
B.
The inconsistent values problem
C.
The missing values problem
D.
The general-purpose remarks column problem

 Answer Option B

6. When assessing the table structure of an acquired set of tables with data, determining foreign keys is (part of) the:

A. first step.
B. second step.
C. third step.
D. fourth step.

 Answer Option B

7. Creating a read-only database is a task that is ________ assigned to beginning database professionals.

A. always
B. commonly
C. seldom
D. never

 Answer Option B

8. Each answer below shows example data from a table. Which answer is an example of the general-purpose remarks column problem?

A. Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.
B. Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.
C. Three rows have the values Brown, NULL, and Blue in the same column.
D. One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.

 Answer Option D

9. For a number of reasons, normalizations is not often an advantage for a(n) ________ database.

A. read-only
B. updateable
C. either a read-only or an updateable
D. None of the above is correct.

 Answer Option A

10. Most of the time, modification anomalies are serious enough that tables should be normalized into:

A. 1NF.
B. 2NF.
C. 3NF.
D. BCNF.

 Answer Option D

11. Each answer below shows example data from a table. Which answer is an example of the missing values problem?

A. Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.
B. Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.
C. Three rows have the values Brown, NULL, and Blue in the same column.
D. One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.

 Answer Option C

12. When assessing the table structure of an acquired set of tables with data, determining functional dependencies is (part of) the:

A. first step.
B. second step.
C. third step.
D. fourth step.

 Answer Option B

13. Each answer below shows example data from a table. Which answer is an example of the multivalue, multicolumn problem?

A. Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.
B. Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.
C. Three rows have the values Brown, NULL, and Blue in the same column.
D. One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.

 Answer Option A

14. When assessing the table structure of an acquired set of tables with data, counting the number of table rows is (part of) the:

A. first step.
B. second step.
C. third step.
D. fourth step.

 Answer Option A

15. If a table has been normalized so that all determinants are candidate keys, then that table is in:

A. 1NF.
B. 2NF.
C. 3NF.
D. BCNF.

 Answer Option D

16. Read-only databases are ________ updated.

A. always
B. commonly
C. seldom
D. never

 Answer Option D

17. Needing to assess the validity of assumed referential integrity constraints on foreign keys is a(n) ________ of normalization.

A. advantage
B. disadvantage
C. either an advantage or disadvantage
D. neither an advantage nor disadvantage

 Answer Option D

18. When assessing the table structure of an acquired set of tables with data, determining primary keys is (part of) the:

A. first step.
B. second step.
C. third step.
D. fourth step.

 Answer Option B

19. Normalization ________ data duplication.

A. eliminates
B. reduces
C. increases
D. maximizes

 Answer Option A

20. Each answer below shows example data from a table. Which answer is an example of the inconsistent values problem?

A. Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.
B. Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.
C. Three rows have the values Brown, NULL, and Blue in the same column.
D. One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.

 Answer Option B

6. When assessing the table structure of an acquired set of tables with data, determining foreign keys is (part of) the:

A. first step.
B. second step.
C. third step.
D. fourth step.

 Answer Option B

7. Creating a read-only database is a task that is ________ assigned to beginning database professionals.

A. always
B. commonly
C. seldom
D. never

 Answer Option B

8. Each answer below shows example data from a table. Which answer is an example of the general-purpose remarks column problem?

A. Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row.
B. Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column.
C. Three rows have the values Brown, NULL, and Blue in the same column.
D. One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column.

 Answer Option D

9. For a number of reasons, normalizations is not often an advantage for a(n) ________ database.

A. read-only
B. updateable
C. either a read-only or an updateable
D. None of the above is correct.

 Answer Option A

10. Most of the time, modification anomalies are serious enough that tables should be normalized into:

A. 1NF.
B. 2NF.
C. 3NF.
D. BCNF.

 Answer Option D

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