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Data Models into Database Designs

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.

True
False

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Data Models into Database Designs
If a relationship has a cascade updates constraint, then if ________ in the parent table is changed, then the same change will automatically be made to any corresponding foreign key value.

any alternate key
the primary key
a surrogate key
a foreign key

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Data Models into Database Designs
When the child entity is required, we are restricted from creating a new parent row without also creating a corresponding child row at the same time.

True
False

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Data Models into Database Designs
For every relationship, there are six possible sets of minimum cardinalities.

True
False

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Data Models into Database Designs
When the parent entity is required, a new child row can always be inserted.

False
True

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

True
False

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