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asdf Quiz on Chapter 6 (True/False), created by . . on 22/09/2016.

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Chapter 6 (True/False)

Question 1 of 33

1

1. Normalization works through a series of stages called normal forms.

Select one of the following:

  • True
  • False

Explanation

Question 2 of 33

1

2. Normalization produces a lower normal form.

Select one of the following:

  • True
  • False

Explanation

Question 3 of 33

1

3. Normalization is a process that is used for changing attributes to entities.

Select one of the following:

  • True
  • False

Explanation

Question 4 of 33

1

4. In order to meet performance requirements, you may have to denormalize portions of the database design.

Select one of the following:

  • True
  • False

Explanation

Question 5 of 33

1

5. Denormalization produces a lower normal form.

Select one of the following:

  • True
  • False

Explanation

Question 6 of 33

1

6. Normalization is a very important database design ingredient and the highest level is always the most desirable.

Select one of the following:

  • True
  • False

Explanation

Question 7 of 33

1

7. A table is in BCNF if every determinant in the table is a candidate key.

Select one of the following:

  • True
  • False

Explanation

Question 8 of 33

1

8. A table is in BCNF if every determinant in the table is a foreign key

Select one of the following:

  • True
  • False

Explanation

Question 9 of 33

1

9. A table is in fourth normal form if it is in third normal form and has no independent multivalued dependencies.

Select one of the following:

  • True
  • False

Explanation

Question 10 of 33

1

10. Relational models view the data as part of a table or collection of tables in which all key values must be identified.

Select one of the following:

  • True
  • False

Explanation

Question 11 of 33

1

11. Repeating groups must be eliminated by making sure that each row defines a single entity

Select one of the following:

  • True
  • False

Explanation

Question 12 of 33

1

12. Dependency diagrams are very helpful in getting a bird’s-eye view of all the relationships among a table’s attributes.

Select one of the following:

  • True
  • False

Explanation

Question 13 of 33

1

13. Dependencies that are based on only a part of a composite primary key are called transitive dependencies.

Select one of the following:

  • True
  • False

Explanation

Question 14 of 33

1

14. All relational tables satisfy the 1NF requirements.

Select one of the following:

  • True
  • False

Explanation

Question 15 of 33

1

15. With partial dependencies, data redundancies occur because every row entry requires duplication of data.

Select one of the following:

  • True
  • False

Explanation

Question 16 of 33

1

16. Converting a database format from 1NF to 2NF is a complex process.

Select one of the following:

  • True
  • False

Explanation

Question 17 of 33

1

17. Because a partial dependency can exist only if a table's primary key is composed of several attributes, if a table in 1NF has a single-attribute primary key, then the table is automatically in 2NF.

Select one of the following:

  • True
  • False

Explanation

Question 18 of 33

1

18. A table is in 2NF if it is in 1NF and it includes no partial dependencies.

Select one of the following:

  • True
  • False

Explanation

Question 19 of 33

1

19. It is possible for a table in 2NF to exhibit transitive dependency, where one or more nonprime attributes functionally determine other nonprime attributes.

Select one of the following:

  • True
  • False

Explanation

Question 20 of 33

1

20. A determinant is any attribute whose value determines other values within a column.

Select one of the following:

  • True
  • False

Explanation

Question 21 of 33

1

21. A dependency of one nonprime attribute on another nonprime attribute is a partial dependency.

Select one of the following:

  • True
  • False

Explanation

Question 22 of 33

1

22. Atomic attributes are attributes that can be further divided

Select one of the following:

  • True
  • False

Explanation

Question 23 of 33

1

23. Normalization should be part of the design process.

Select one of the following:

  • True
  • False

Explanation

Question 24 of 33

1

24. Normalization represents a micro view of the entities within the ERD.

Select one of the following:

  • True
  • False

Explanation

Question 25 of 33

1

25. The combination of normalization and ER modeling yields a useful ERD, whose entities may now be translated into appropriate relationship structures.

Select one of the following:

  • True
  • False

Explanation

Question 26 of 33

1

26. A good relational DBMS excels at managing denormalized relations.

Select one of the following:

  • True
  • False

Explanation

Question 27 of 33

1

27. The advantage of higher processing speed must be carefully weighed against the disadvantage of data anomalies.

Select one of the following:

  • True
  • False

Explanation

Question 28 of 33

1

28. Normalization purity is easy to sustain in the modern database environment.

Select one of the following:

  • True
  • False

Explanation

Question 29 of 33

1

29. Unnormalized database tables often lead to various data redundancy disasters in production databases.

Select one of the following:

  • True
  • False

Explanation

Question 30 of 33

1

30. Attributes should clearly define participation, connectivity, and document cardinality.

Select one of the following:

  • True
  • False

Explanation

Question 31 of 33

1

31. Repeating groups must be eliminated by making sure that each column defines a single entity

Select one of the following:

  • True
  • False

Explanation

Question 32 of 33

1

32. Dependencies can be identified with the help of the dependency diagram.

Select one of the following:

  • True
  • False

Explanation

Question 33 of 33

1

33. Data redundancies are caused by the fact that every row entry requires duplication of data

Select one of the following:

  • True
  • False

Explanation