Database Design Revision pre topic quiz
Authored by Fiona Jorgenson
Computers
12th Grade
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5 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
This entity-occurrence diagram shows the links between instances in two entities.
What is the relationship between the two entities?
One-to-many
Many-to-many
One-to-one
Indeterminate
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Examine the data model which contains the following tables.
Which is the correct entity-relationship diagram for the model?
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Consider the following statements.
• An employee can make several sales throughout the day.
• Each sale is made by only one employee.
Which entity-relationship diagram represents the statements?
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Consider the following entity-relationship diagram and complete the statement that it represents.
A car is repaired by:
one mechanic, but a mechanic can repair several cars.
several mechanics and each mechanic repairs only one car.
several mechanics and each mechanic repairs several cars.
one mechanic and a mechanic only repairs one car.
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The following database table is used by a company.
Which would be the correct query to only produce a list of businesses and the number of locations they have?
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