
IM2 Midterm exam
Authored by John Miranda
Computers
University
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40 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
What is an Entity Relationship Diagram (ERD)?
A graphical representation of entities and their relationships in a database system.
A diagram that shows the flow of data between entities in a system.
A diagram that shows the hierarchy of entities in a system.
A diagram that shows the business processes in a system.
2.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
What is an entity in an ERD?
A data type used in a database system.
A person, place, or thing about which data is stored.
A connection between two entities in a system.
A set of rules used to govern data in a system.
3.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
What is a relationship in an ERD?
A data type used in a database system.
A person, place, or thing about which data is stored.
A connection between two entities in a system.
A set of rules used to govern data in a system.
4.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
What is a cardinality in an ERD?
The number of attributes in an entity.
The number of entities in a database system.
The number of relationships between entities.
The number of instances of one entity that can be associated with instances of another entity.
5.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
What is an attribute in an ERD?
A data type used in a database system.
A person, place, or thing about which data is stored.
A connection between two entities in a system.
A property or characteristic of an entity.
6.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
What is a primary key in an ERD?
An attribute that uniquely identifies an entity.
A connection between two entities in a system.
A rule that governs the behavior of data in a system.
A type of data that is used in a database system.
7.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
What is a foreign key in an ERD?
An attribute that uniquely identifies an entity.
A connection between two entities in a system.
A rule that governs the behavior of data in a system.
An attribute in one entity that refers to the primary key of another entity.
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