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- W2084898648 abstract "Business intelligence is based on the existence of main components including : data warehouses .The data warehouse is a specialized database which main task is to provide quick access to data in analysis objective. But in some cases it is necessary to use a set of data warehouses to provide a complete information . This structure is what we call federation, and even if the components are physically separated, they are logically seen as a single component. Generally, these items are heterogeneous which make it difficult to create the logical federation schema ,and the execution of user queries a complicated mission. In this paper, we will fill this gap by proposing a model for logical federation schema creation based on ontology, in order to treat different schema types (star , snow flack) including the treatment of hierarchies dimension too." @default.
- W2084898648 created "2016-06-24" @default.
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- W2084898648 date "2014-02-01" @default.
- W2084898648 modified "2023-09-27" @default.
- W2084898648 title "Semantic Technologies Applying to Data Warehouses Federation" @default.
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- W2084898648 doi "https://doi.org/10.4304/jetwi.6.1.15-19" @default.
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