# Database Design Section 3 Quiz Answers

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Section 3 Quiz (Answer all questions in this section)

1. The many end of a Relationship is called:
Gulls Foot
Crows Foot (*)
Crows Ear
Pigs Ear

2. Which symbol is used to show that a particular attribute is mandatory?
&
* (*)
o
#

3. Matrix Diagrams are developed BEFORE the ERD. True or False?
True (*)
False

4. Matrix Diagrams are used to verify that all relationships have been identified for an ERD. True or False?
True (*)
False

5. Matrix Diagrams show Optionality and Cardinality of the ERDs they document. True or False?
True
False (*)
(Answer all questions in this section)

6. What are the three properties that every relationship should have?
Name, optionality, cardinality (*)
A UID bar, a diamond, an arc
Transferability, degree, name
Name, optionality, arcs

7. Which of the following are true about Relationship Optionality? (Choose two)
Optionality specifies only singularity or plurality, but not a specific plural number.
Optionality specifies a counting number (like 1, 2, 3, 4 etc.) in a relationship.
Optionality specifies whether something is required or not. (*)
Optionality answers "may or must". (*)

8. Which of the following are true about Cardinality? (Choose two)
Cardinality specifies whether something is required or not.
Cardinality specifies only singularity or plurality, but not a specific plural number. (*)
Cardinality tells "how many". (*)
Cardinality specifies a counting number (like 1, 2, 3, 4 etc.) in a relationship.

9. Relationships always exist between
2 attributes
2 entities (or one entity and itself) (*)
3 or more attributes
3 or more entities

10. Relationships can be either mandatory or optional. True or False?
True (*)
False
(Answer all questions in this section)

11. Which of the following are used to show Cardinality on an ERD? (Choose two)
Single toe. (*)
Solid line.
Crow's foot. (*)
Dashed line.

12. Relationship names are not shown on an ERD. True or False?
True
False (*)

13. When reading a relationship between 2 entities, the relationship is read both from left to right and right to left. True or False?
True (*)
False

14. ERDish describes a relationship in words. True or False?
True (*)
False

15. When reading the relationships in an ERD, you are said to be speaking:
Relationship-ish
Entity-ish
Gibberish
ERDish (*)

# Lanjutan... Database Design Section 4 Quiz

Tag : database design midterm exam, database design section 3 quiz answers.

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