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To specify the foreign keys in relations referencing temporal data we need to specify _______

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To specify the foreign keys in relations referencing temporal data we need to specify _______

(a) The time interval

(b) The Boolean value for the working

(c) The integer corresponding to the relation number

(d) None of the mentioned

I had been asked this question in exam.

I'd like to ask this question from Normal Forms in division Relational Database Design of RDBMS

1 Answer

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Best answer
Correct option is (a) The time interval

Best explanation: To specify the foreign keys in relations referencing temporal data we need to specify the time interval. The time interval specification thus preserves referential integrity in the relation.

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