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Data Models into Database Designs

Data Models into Database Designs
A foreign key is used to implement relationships between tables.

False
True

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Data Models into Database Designs
Which of the following situation requires the use of ID-dependent entities?

Archetype/instance relationships only
Association relationships only
Multivalued attributes only
All of these

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Data Models into Database Designs
For every relationship, how many possible types of actions are there when enforcing minimum cardinalities?

Six
Two
Three
Four

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Data Models into Database Designs
For every relationship, there are six possible referential integrity actions.

False
True

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Data Models into Database Designs
When the parent entity is required, cascading updates and cascading deletions should be allowed or the associated actions on the parent should be prohibited.

False
True

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Data Models into Database Designs
Which of the following data constraints would be used to specify that the value of a cell in one column must be less than the value of a cell in another column in the same row of the same table?

A domain constraint
A range constraint
An intrarelation constraint
An interrelation constraint

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