Quiz 2 copy 1

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Jordan Wilczewski2

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1. ETROY Introduction to Database Syst CS-4420-XTIA 14/T2 (Niu)

2. Assessments 3. Quizzes of Chapters 4. Review Test Submission: Quiz for Chapters Two and Three

ETROY Introduction to Database Syst CS-4420-XTIA 14/T2 (Niu)

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Review Test Submission: Quiz for Chapters Two and Three User
Jordan Wilczewski
Course
ETROY Introduction to Database Syst CS-4420-XTIA 14/T2 (Niu)
Test
Quiz for Chapters Two and Three
Started
11/5/14 9:21 PMLATE
Submitted
11/5/14 9:58
…show more content…
None of these.

Question 8
0 out of 1 points

In the figure below, the patient must be either an outpatient or a resident patient. This is an example of the ________ rule.

Selected Answer: [None Given]
Answers:

disjoint

specialization

generalization

overlap

Question 9
0 out of 1 points

In the figure below, which of the following are subtypes of patient?

Selected Answer: [None Given]
Answers:

Outpatient

Physician

Bed

All of these

Question 10
1 out of 1 points

Generalization is a top-down process.

Selected Answer: False
Answers:
True

False

Question 11
1 out of 1 points

Subtypes should be used when:

Selected Answer: there are attributes that apply to some but not all instances of an entity type.
Answers:

there are attributes that apply to some but not all instances of an entity type.

supertypes relate to objects outside the business.

the instances of a subtype do not participate in a relationship that is unique to that subtype.

None of these.

Question 12
0 out of 1 points

The following figure shows a(n):

Selected Answer: [None Given]
Answers:
disjoint constraint.

completeness constraint.

supertype/subtype hierarchy.

spindle constraint.

Question 13
1 out of 1 points

A ________ constraint is a type of constraint that addresses whether an instance of a supertype must also be an instance of at least one subtype.

Selected Answer: completeness

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