a) Roll-up
Explanation:
The opposite operation-that of moving from coarser-granularity data to finer-granularity data-is called a drill down.
Explain about candidate check?
The generalization of cross-tab which is represented visually is ____________ which is also called as data cube. a) Two dimensional cube b) Multidimensional cube c) N-dimensional cube d) Cuboid
The process of viewing the cross-tab (Single dimensional) with a fixed value of one attribute is. a) Slicing b) Dicing c) Pivoting d) Both a and b
OLAP stands for a) Online analytical processing b) Online analysis processing c) Online transaction processing d) Online aggregate processing
It is because of __________ that enables OLAP to achieve great performance for a query. a) Aggregation b) Composition c) Dice d) Hybrid
_____operation of OLAP provides alternate presentation of data by rotating it. a) Slice b) Roll up c) Dice d) Pivot
What is the source of the OLAP cube's metadata? a) Star schema b) Snow flake schema c) Both a and b d) Database
Aggregations are built from the _________________ by changing the granularity on specific dimensions. a) Both c and d below b) schema c) Dimension table d) Fact table
Can the user perform data-entry or editing tasks on OLAP data? a) Yes b) No
Following are three steps in random order for creating a data cube. 1. Chose a data source. Create the query that extracts data from the database. Create the cube from the extracted data. a) 1,2,3 b) 2,1,3 c) 3,2,1 d) 3,1,2
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