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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 recordI got this question during an interview.My question is based upon File Organization in portion Storage and File Structure of RDBMS

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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