1.

The operation of moving from finer granular data to coarser granular data is called _______(a) Reduction(b) Increment(c) Roll up(d) Drill downThe question was asked by my college director while I was bunking the class.Enquiry is from OLAP topic in division Intermediate and Advanced Sql of RDBMS

Answer»

The CORRECT choice is (C) Roll up

The explanation is: 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 roll-up.



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