
National 5 - Databases - ER Diagrams
Authored by Andrew Mawston
Computers
10th Grade
Used 6+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of an entity relationship diagram (ER diagram) in database design?
To visually describe the type of relationship between tables
To store large amounts of data
To create complex mathematical calculations
To design user interfaces
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a one-to-many relationship, which side is indicated by a straight line in an ER diagram?
Neither side
Both sides
The many side
The one side
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the crow's feet symbol indicate in an ER diagram?
The one side of a relationship
A one-to-one relationship
The many side of a relationship
A circular relationship
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of including the name of the relationship in an ER diagram?
To provide a small description of the relationship between entities
To indicate the primary key of the entity
To define the foreign key constraints
To specify the data type of the attributes
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are attributes in the context of an ER diagram?
Relationship names between entities
Fields related to an entity
Foreign keys of the entities
Primary keys of the entities
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the context of ER diagrams, what does a primary key indicate?
A one-to-many relationship
A description of the relationship between entities
A field related to another entity
A unique identifier for each record in the entity
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of foreign keys in an ER diagram?
To establish a link between two entities
To provide a small description of the relationship between entities
To indicate the primary key of an entity
To define the data type of the attributes
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