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What does a null bitmap indicate?

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+1 vote
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in RDBMS by (118k points)
What does a null bitmap indicate?

(a) The database does not exist

(b) The record does not exist

(c) The attributes of a record do not have a value

(d) The attributes are missing from record

I got this question during an interview.

My question is based upon File Organization in portion Storage and File Structure of RDBMS

1 Answer

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Best answer
Right answer is (c) The attributes of a record do not have a value

The best I can explain: A null-bitmap indicates that the attributes of a particular record have null values.

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