Data Warehousing and Data Mining20805 marksNumerical: cuboids in data cubeCube materialization
How many cuboids are possible from 5-dimensional data? Discuss the concept of full cube and iceberg cube.
How many cuboids are possible from 5-dimensional data? Discuss the concept of full cube and iceberg cube. [5]
- Number of dimensions: $n = 5$ - (No concept hierarchies specified, so we assume one level per dimension.) --- A data cube of $n$ dimensions (without concept hierarchies) contains $2^n$ cuboids, because each dimension can either be included or excluded from a given group-by. $$\text{Number of cu...