Akoka, Jacky; Comyn-wattiau, Isabelle; Prat, Nicolas - ESSEC Business School - 2009
Data warehouses are based on multidimensional modeling. Using On-Line Analytical Processing (OLAP) tools, decision makers navigate through and analyze multidimensional data. Typically, users need to analyze data at different aggregation levels (using roll-up and drill-down functions). Therefore,...