Which constraint requires that the binary relationship indicate all combinations that must appear in the ternary relationship?
A. MUST COVER
B. MUST NOT
C. Both of the above
D. None of the above is correct
Answer: Option A
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A. A domain constraint
B. A range constraint
C. An intrarelation constraint
D. An interrelation constraint
In a 1:N relationship, the foreign key is placed in:
A. either table without specifying parent and child tables.
B. the parent table.
C. the child table.
D. either the parent table or the child table.
A. Null status
B. Data type
C. Default value
D. Data constraints
A primary key should be defined as:
A. NULL.
B. NOT NULL.
C. Either of the above can be used.
D. None of the above are correct.
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