Exercise: Data Modeling With The Entity Relationship Model

Questions for: Data Modeling With The Entity Relationship Model

A maximum cardinality is the maximum number of entity instances that can participate in a relationship instance.
A:
True
B:
False
C:
D:
Answer: A
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In a 1:N relationship, the parent is the entity on the one side of the relationship and the child is the entity on the N side of the relationship.
A:
True
B:
False
C:
D:
Answer: A
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1:1, 1:N and N:M relationships are also known as HAS-A relationships.
A:
True
B:
False
C:
D:
Answer: A
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Entity instances are associated by relationship classes.
A:
True
B:
False
C:
D:
Answer: B
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An entity is something that can be identified in the user's work environment; something that the users want to track.
A:
True
B:
False
C:
D:
Answer: A
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