
Kuis 2 Database Design
Authored by Lockey Irawan
Computers
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
What are the two main rules that subtypes must follow in an Entity Relationship Diagram?
Complete and Overlapping
Exhaustive and Mutually Exclusive
Independent and Dependent
Primary and Secondary
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Which of the following is an example of a structural business rule?
"Students must have studied algebra before enrolling in trigonometry"
"All teachers at our school must possess a valid teaching certificate"
"Approval for travel requests must be signed by the employee's manager"
"Any employee whose overtime exceeds 10 hours per week must be paid 1.5 times the hourly rate"
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
In the context of relationship transferability, which relationship would be considered nontransferable?
A student moving from one study group to another
An employee being transferred from one department to another
A receipt being issued to a student for tuition payment
A class being reassigned to a different teacher
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
How is a nontransferable relationship represented in an ERD?
With a solid line
With a dashed line
With a diamond symbol on the relationship line
With a circle at the end of the relationship
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Which type of relationship is most common in Entity Relationship Models?
One-to-One (1:1)
One-to-Many (1:M)
Many-to-Many (M:M)
Self-referencing relationships
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
What happens to Many-to-Many relationships in the final stages of database modeling?
They remain as M:M relationships
They are converted to 1:1 relationships
They are resolved using intersection entities
They are eliminated from the model
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
In a resolved Many-to-Many relationship, what typically forms the unique identifier (UID) of the intersection entity?
A new artificial key
The combination of foreign keys from the originating entities (barred relationships)
A sequential number
The primary key of one of the original entities
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