
Understanding Data Model Relationships
Quiz
•
Computers
•
University
•
Practice Problem
•
Easy
Felicia Evan
Used 3+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of relationships in a data model?
To create redundancy in data storage.
To ensure all entities are independent of each other.
To eliminate the need for data normalization.
The purpose of relationships in a data model is to define connections between entities, enabling data organization and retrieval.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does it mean for a relationship to be bi-directional?
A relationship is bi-directional when one party has all the control.
A relationship is bi-directional if it only involves one-way communication.
A relationship is bi-directional when both parties can affect and communicate with each other.
A relationship is bi-directional when both parties are physically distant.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a key feature of relationships in data models?
Relationships can only exist between similar entities.
Relationships define connections between entities.
Relationships only apply to numerical data.
Relationships are irrelevant in data models.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of relationship allows multiple instances of one entity to relate to a single instance of another?
One-to-many relationship
Zero-to-one relationship
Many-to-many relationship
One-to-one relationship
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a one-to-many relationship, how many instances can the 'one' side have?
1
3
2
Unlimited
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the term for the minimum number of instances required in a relationship?
Maximum cardinality
Required instances
Minimum cardinality
Minimum frequency
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following best describes a many-to-many relationship?
A relationship where multiple records in one entity are related to multiple records in another entity.
A relationship that does not involve any records from either entity.
A relationship where multiple records in one entity are related to a single record in another entity.
A relationship where one record in an entity is related to multiple records in another entity.
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