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Hierarchies in a multidimensional model: From conceptual modeling to logical representation
2006
Data & Knowledge Engineering
Hierarchies are used in Data Warehouses (DWs) and On-Line Analytical Processing (OLAP) systems to see data at different levels of detail. However, many kinds of hierarchies arising in real-world situations are not addressed by current OLAP systems. Further, there is still no agreement on a conceptual model for DW and OLAP design that offers both a graphical representation and a formal definition. In this paper, we formally define the MultiDimER model, a conceptual multidimensional model that
doi:10.1016/j.datak.2005.08.003
fatcat:o7lzwffdgrdt3mnftbmysy4d4y