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Chapter 6 (True/False)

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asdf Quiz on Chapter 6 (True/False), created by . . on 22/09/2016.
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Quiz by . ., updated more than 1 year ago
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Created by . . about 8 years ago
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Resource summary

Question 1

Question
1. Normalization works through a series of stages called normal forms.
Answer
  • True
  • False

Question 2

Question
2. Normalization produces a lower normal form.
Answer
  • True
  • False

Question 3

Question
3. Normalization is a process that is used for changing attributes to entities.
Answer
  • True
  • False

Question 4

Question
4. In order to meet performance requirements, you may have to denormalize portions of the database design.
Answer
  • True
  • False

Question 5

Question
5. Denormalization produces a lower normal form.
Answer
  • True
  • False

Question 6

Question
6. Normalization is a very important database design ingredient and the highest level is always the most desirable.
Answer
  • True
  • False

Question 7

Question
7. A table is in BCNF if every determinant in the table is a candidate key.
Answer
  • True
  • False

Question 8

Question
8. A table is in BCNF if every determinant in the table is a foreign key
Answer
  • True
  • False

Question 9

Question
9. A table is in fourth normal form if it is in third normal form and has no independent multivalued dependencies.
Answer
  • True
  • False

Question 10

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

Question 11

Question
11. Repeating groups must be eliminated by making sure that each row defines a single entity
Answer
  • True
  • False

Question 12

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

Question 13

Question
13. Dependencies that are based on only a part of a composite primary key are called transitive dependencies.
Answer
  • True
  • False

Question 14

Question
14. All relational tables satisfy the 1NF requirements.
Answer
  • True
  • False

Question 15

Question
15. With partial dependencies, data redundancies occur because every row entry requires duplication of data.
Answer
  • True
  • False

Question 16

Question
16. Converting a database format from 1NF to 2NF is a complex process.
Answer
  • True
  • False

Question 17

Question
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.
Answer
  • True
  • False

Question 18

Question
18. A table is in 2NF if it is in 1NF and it includes no partial dependencies.
Answer
  • True
  • False

Question 19

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

Question 20

Question
20. A determinant is any attribute whose value determines other values within a column.
Answer
  • True
  • False

Question 21

Question
21. A dependency of one nonprime attribute on another nonprime attribute is a partial dependency.
Answer
  • True
  • False

Question 22

Question
22. Atomic attributes are attributes that can be further divided
Answer
  • True
  • False

Question 23

Question
23. Normalization should be part of the design process.
Answer
  • True
  • False

Question 24

Question
24. Normalization represents a micro view of the entities within the ERD.
Answer
  • True
  • False

Question 25

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

Question 26

Question
26. A good relational DBMS excels at managing denormalized relations.
Answer
  • True
  • False

Question 27

Question
27. The advantage of higher processing speed must be carefully weighed against the disadvantage of data anomalies.
Answer
  • True
  • False

Question 28

Question
28. Normalization purity is easy to sustain in the modern database environment.
Answer
  • True
  • False

Question 29

Question
29. Unnormalized database tables often lead to various data redundancy disasters in production databases.
Answer
  • True
  • False

Question 30

Question
30. Attributes should clearly define participation, connectivity, and document cardinality.
Answer
  • True
  • False

Question 31

Question
31. Repeating groups must be eliminated by making sure that each column defines a single entity
Answer
  • True
  • False

Question 32

Question
32. Dependencies can be identified with the help of the dependency diagram.
Answer
  • True
  • False

Question 33

Question
33. Data redundancies are caused by the fact that every row entry requires duplication of data
Answer
  • True
  • False
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