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The operation of moving from coarser granular data to finer granular data is called _______(a) Reduction(b) Increment(c) Roll back(d) Drill downThis question was posed to me in a national level competition.The question is from OLAP topic in portion Intermediate and Advanced Sql of RDBMS

Answer»

Correct answer is (d) DRILL down

To explain: OLAP systems permit USERS to VIEW the data at any LEVEL of granularity. The process of moving from finer granular data to coarser granular data is called as drill-down.



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