
Understanding Entity Relationships

Quiz
•
Computers
•
12th Grade
•
Hard

Loganayagi Murugan
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an entity in the context of a data model?
A physical object or concept
A type of relationship
A property of an object
A database constraint
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does an attribute represent?
A property or characteristic of an entity
A relationship between entities
A unique identifier for an entity
A type of data model
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a composite key?
A set of attributes that uniquely identify an entity
A type of relationship
An attribute of an entity
A diagram representation
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does cardinality refer to in a relationship?
The number of instances associated between entities
The type of relationship
The attributes of an entity
The uniqueness of an entity
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a one-to-many relationship?
One instance of an entity associated with many instances of another
One instance of an entity associated with one instance of another
Many instances of an entity associated with one instance of another
Many instances of an entity associated with many instances of another
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the line in an E-R diagram represent?
The cardinality of the relationship
The attributes of the entities
The entities themselves
The type of data model
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a foreign key?
A property of an entity
An attribute that uniquely identifies a record in a table
A type of data model
An attribute that creates a link between two tables
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