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Not applicable condition can be represented in relation entry as

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in Database Management by (119k points)
Not applicable condition can be represented in relation entry as

(a) NA

(b) 0

(c) NULL

(d) Blank Space

I have been asked this question in a job interview.

Asked question is from The Entity-Relationship Model in division Database Systems Design and Implementation of Database Management

1 Answer

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Best answer
Right option is (c) NULL

The best explanation: NULL always represents that the value is not present.

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