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Interscheme Properties' Role in Data Warehouses
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Author(s): Pasquale De Meo (Università “Mediterranea” di Reggio Calabria, Italy), Giorgio Terracina (Università della Calabria, Italy)and Domenico Ursino (Università “Mediterranea” di Reggio Calabria, Italy)
Copyright: 2005
Pages: 6
Source title:
Encyclopedia of Data Warehousing and Mining
Source Author(s)/Editor(s): John Wang (Montclair State University, USA)
DOI: 10.4018/978-1-59140-557-3.ch123
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Abstract
In this article, we illustrate a general approach for the semi-automatic construction and management of data warehouses. Our approach is particularly suited when the number or the size of involved sources is large and/or when it changes quite frequently over time. Our approach is based mainly on the semi-automatic derivation of interschema properties (i.e., terminological and structural relationships holding among concepts belonging to different input schemas). It consists of the following steps: (1) enrichment of schema descriptions obtained by the semi-automatic extraction of interschema properties; (2) exploitation of derived interschema properties for obtaining in a data repository an integrated and abstracted view of available data; and (3) design of a three-level data warehouse having as its core the derived data repository.
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