Normalising OLAP cubes for controlling sparsity
T Niemi, J Nummenmaa, P Thanisch - Data & Knowledge Engineering, 2003 - Elsevier
A poorly designed OLAP (on-line analytical processing) cube can have a size much larger
than the volume of information, potentially leading to problems with performance and
usability. We give a new normal form for OLAP cube design and synthesis and
decomposition algorithms to produce normalised OLAP cube schemata. OLAP cube
normalisation controls the structural sparsity resulting from inter-dimensional functional
dependencies. We assume that functional dependencies are used to describe the …
than the volume of information, potentially leading to problems with performance and
usability. We give a new normal form for OLAP cube design and synthesis and
decomposition algorithms to produce normalised OLAP cube schemata. OLAP cube
normalisation controls the structural sparsity resulting from inter-dimensional functional
dependencies. We assume that functional dependencies are used to describe the …
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