Entity Relationship Model Quiz

Quiz
•
Other
•
11th Grade
•
Medium

Joseph Ighosiohwonoja
Used 8+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Isla is studying database design in her computer science class. What is the Entity-Relationship model?
The Entity-Relationship model is a statistical model used in machine learning.
The Entity-Relationship model is a conceptual data model used in database design to represent the relationships between entities.
The Entity-Relationship model is a type of data structure used in computer graphics.
The Entity-Relationship model is a programming language used to create web applications.
Answer explanation
The correct choice defines the Entity-Relationship model as a conceptual data model used in database design, which accurately describes its purpose of representing relationships between entities.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sophia is studying the Entity-Relationship model in her database class. What does cardinality represent in this model?
The cardinality in the Entity-Relationship model represents the relationship between entities.
The cardinality in the Entity-Relationship model represents the hierarchy of the entities.
The cardinality in the Entity-Relationship model represents the attributes of the entities.
The cardinality in the Entity-Relationship model represents the size of the entities.
Answer explanation
The correct choice is that cardinality represents the relationship between entities in the Entity-Relationship model. It defines how many instances of one entity relate to instances of another, such as one-to-one or many-to-many.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a class project, Jackson is trying to understand what attributes are in the Entity-Relationship model. What are attributes in this context?
Properties or characteristics of an entity
Actions performed on entities
Methods of an entity
Relationships between entities
Answer explanation
In the Entity-Relationship model, attributes refer to the properties or characteristics of an entity. They describe the details that define the entity, making this the correct choice.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a school database, what is an entity in the Entity-Relationship model?
An entity is a relationship between two other entities.
An entity is a type of attribute in the model.
An entity is a data structure used to store information.
An entity is a real-world object or concept that has attributes and can be uniquely identified, such as a student like Henry or Benjamin.
Answer explanation
An entity in the Entity-Relationship model represents a real-world object or concept, like a student, that has attributes and can be uniquely identified. This distinguishes it from relationships or attributes.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Anika is studying the Entity-Relationship model in her database class. What are the types of cardinality relationships she should be aware of?
one-to-one
one-to-few
many-to-few
one-to-one, one-to-many, many-to-many
Answer explanation
In the Entity-Relationship model, the main types of cardinality relationships are one-to-one, one-to-many, and many-to-many. The other options, one-to-few and many-to-few, are not standard cardinality types.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a school, each student has exactly one locker assigned to them. What is the cardinality of the relationship between students and lockers?
1:N
1:2
N:N
1:1
Answer explanation
The relationship between students and lockers is 1:1 because each student has exactly one locker assigned to them, and each locker is assigned to exactly one student.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a classroom, how many students can one teacher manage effectively?
None
Many
One
Few
Answer explanation
A teacher can effectively manage many students at once, utilizing strategies like group work and classroom management techniques. This allows for a productive learning environment, making 'Many' the correct choice.
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