
ER model
Quiz
•
Computers
•
University
•
Practice Problem
•
Medium
Neeraj Gupta
Used 94+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Consider the following ER diagram. The minimum number of tables needed to represent M, N, P, R1, R2 is:
2
3
4
5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier?
Weak entity
Strong entity
ID-dependent entity
ID- independent entity
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Properties that describe the characteristics of entities are called:
entities.
attributes.
identifiers.
relationships.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Entities can be associated with one another in which of the following?
Entities
Attributes
Identifiers
Relationships
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an Entity?
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an Attribute?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of these is an example of an Attribute for Student
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