Bitmaps commonly use one bitmap for every single distinct value. Number of bitmaps used can be reduced by opting for a different type of encoding. Space can be optimized but when a query is generated bitmaps have to be accessed.
Explain about the view selection problem?
Explain about aggregations?
What is ROLAP?
Explain about MOLAP?
Explain about the functionality of OLAP?
Explain about OLAP?
What is sparsity? a) A condition when each cell of the cube is filled with data and that leads to more processing time. b) A condition when each cell of the cube is not filled with data and that leads to less processing time. c) A condition when each cell of the cube is not filled with data and that leads to more processing time. d) A condition when each cell of the cube is not filled with data.
What is the other name for OLAP cube? a) Multidimensional cube b) Hyper cube c) Cube d) Both 1 and 2
What is OLAP?
What are Cubes in OLAP?
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