Usage Based Optimization is the process of defining aggregation design based on the actual queries executed by the users/applications accessing the cube, which is captured using a log. Continue reading #SqlServer Interview question: What is Usage Based Optimization in SSAS? How is it performed?
Aggregates are summarized values, each of which corresponds to a combination of an attribute from each dimension and a measure group. An aggregate in SSAS is the differentiating factor between OLAP and OLTP, and is the fundamental principle of SSAS/OLAP, which offers blazing fast performance. Continue reading SSAS Interview question: What are aggregates? What is the purpose of defining an aggregation design in Analysis Services?