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Data Models into Database Designs

Data Models into Database Designs
In 1:N relationships, which entity becomes the parent entity is arbitrary.

False
True

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Data Models into Database Designs
Which of the following column properties specifies whether or not cells in a column must contain a data value?

Data constraints
Default value
Null status
Data type

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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
An interrelation constraint
An intrarelation constraint
A range constraint

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Data Models into Database Designs
The identifier of an entity will become the ________ of the new table.

main attribute
identity key
primary key
foreign key

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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?

MUST NOT
Both of the above
MUST COVER
None of these

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Data Models into Database Designs
In a 1:N relationship, the foreign key is placed in:

either table without specifying parent and child tables.
the child table.
the parent table.
either the parent table or the child table.

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