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Data modeling with er model Practice Questions & Answers

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A maximum cardinality is the maximum number of entity instances that can participate in a relationship instance.

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A maximum cardinality is the maximum number of entity instances that can participate in a relationship instance.

A).  True

B).  False

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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.

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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

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1:1, 1:N and N:M relationships are also known as HAS-A relationships.

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1:1, 1:N and N:M relationships are also known as HAS-A relationships.

A).  True

B).  False

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Entity instances are associated by relationship classes.

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Entity instances are associated by relationship classes.

A).  True

B).  False

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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.

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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