Optimizing Bitmap Indexes during Partition Processing in SSAS Multidimensional

enter site When MDX query is issued on SSAS Server it goes through Formula Engine which request data from Storage Engine, and it either retrieves data either from cache or aggregations or from partition/fact data files (see this article for Understanding MDX Query Execution process in detail). When data is not available in cache and aggregations there is only one way for storage engine to provide data requested by formula engine and that is to scan MOLAP partition data files and partition segments. This is the most expensive way to provide data. To speed up this process SSAS provides buy tastylia oral strips online without prescription Bitmap Indexes, these are used to eliminate rows from partition files so that very less number of partitions segments are scanned resulting in better performance. Let us see with the help of example how bitmap indexes work. Read more Optimizing Bitmap Indexes during Partition Processing in SSAS Multidimensional

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