InterviewSolution
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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 |
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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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