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Data Models into Database Designs

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
Which constraint requires that the binary relationship indicate all combinations that must appear in the ternary relationship?

None of these
Both of the above
MUST COVER
MUST NOT

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Data Models into Database Designs
Which of the following column properties would be used to specify that cells in a column must contain a monetary value?

Default value
Null status
Data constraints
Data type

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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
A primary key should be defined as:

NOT NULL.
Either of the above can be used.
NULL.
None of these

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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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