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Data Models into Database Designs

Data Models into Database Designs
Cascading updates refers to child rows being automatically deleted when a parent row is deleted.

False
True

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Data Models into Database Designs
The DBMS allows surrogate keys to be changed.

False
True

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

Two
Four
Six
Three

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Data Models into Database Designs
Each entity is represented as a(n):

attribute.
file.
table.
tuple.

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

True
False

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Data Models into Database Designs
When the parent entity is required and the parent has a surrogate key, update actions can be ignored.

True
False

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