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Data WareHouse Solution

Elementary Concepts about DW and DSS
A DSS (Decisional Support System) is a larger concept than Datawarehouse, which is just a type of architecture. An advanced Datawarehousing Solution includes Data Repository layer (Meta Data describing the flow of data transformation from the source to the High level Business information) and a (set of) Database(s).
The following presentations develop some concepts about DW design and setup ;
The second one is related to Telco environnement;

Power point Presentation about DW Basic Concepts

Power point Presentation about DW Advanced Concepts