Multi-star conceptual schemas for OLAP systems

OLAP tools divide concepts based on whether they are used as analysis dimensions, or are the fact subject of analysis, which gives rise to star shape schemas. Operations are always provided to navigate inside such star schemas. However, the navigation among different stars use to be forgotten. This paper studies different kinds of conceptual relationships between stars (i.e. Derivability, Generalization/Specialization, Aggregation/Decomposition, or Temporal), and proposes a 3-level schemas architecture to ease the implementation and usage of multi-star schemas.

Country

Spain

Related Organizations

Keywords

Drill across, Àrees temàtiques de la UPC::Informàtica::Aplicacions de la informàtica, OLAP, :Informàtica::Aplicacions de la informàtica [Àrees temàtiques de la UPC], :Informàtica [Àrees temàtiques de la UPC], Multidimensional schemas, Conceptual modeling, Àrees temàtiques de la UPC::Informàtica, Semantics

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