Ontological approach for Data WareHouse design

Waste management is a major concern of the various policy makers, economic and social. It is present each time he comes to launching development projects and / or development of urban infrastructure. The implementation of Data Warehousing assisting in decision making in this context, proves very useful, but at the same time a very complex task. We provide a solution to support Data Warehouse design. Our solution combines the two classical approaches to design, it is both oriented and need-oriented data. It is based on ontology representation languages an the results of work on the alignment. Our Data Warehouse design process has two stages. The first one which is interactive and semi-automatic, transforms user requirements into ontologies, the second step that is fully automatic, aligns the resulting ontologies from the first step and produces an ontology associated to the multidimensional data model. The waste management field will be our guideline to illustrate our approach.