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Data Models into Database Designs

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
A foreign key is:

used to define data types.
All of these
a column containing the primary key of another table.
used to define null status.

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Data Models into Database Designs
All primary keys are required.

False
True

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

True
False

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Data Models into Database Designs
Which of the following data constraints would be used to specify that the value of cells in a column must be one of a specific set of possible values?

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

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

False
True

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