Construction and Maintenance of Heterogeneous Data Warehouses
M. Badri, Faouzi Boufarès, Subhi Hammadi Hamdoun, Véronique Heiwy, K. Lellahi · IGI Global eBooks · 2010
The data necessary to decisional ends are increasingly complex. They have heterogeneous formats and come from distributed sources. They can be classified in three categories: the structured data, the semistructured data and unstructured data. In this work, we are interested in the field of data integration with the aim of construction and maintenance of warehouses whose sources are completely heterogeneous and belonging to the various categories. We propose a formal framework based on the definition of an integration environment. A set of “integration relationships” between the components of the sources is thus defined: an equivalence relation and a strict order relation. These relationships are independent of any data sources modelling. These last can be then heterogeneous and having different models and/ or categories. Two different physical architectures, to create and maintain the warehouses and the materialized views, are given.