Faouzia Wadjinny

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As more and more data is available through the Web, mediation of information from multiple autonomous and heterogeneous data sources becomes a crucial task for future Web information systems. We describe the features of our mediation framework WASSIT (frameWork d'intégrAtion de reSSources de données par la médIaTion), which provides the(More)
Extraction, Transformation and Loading (ETL) processes aim to extract data from data sources to targets, via a set of transformations. In many situations, an ETL process can be subject to changes for several reasons. For instance, data sources changes, new requirements and bug fixing. When changes happen, analyzing the impact of change is mandatory to avoid(More)
In recent years, the issue of heterogeneity and data sharing has been discussed in different contexts and according to diverse points of view. However, we can retain especially two significant axes which are data integration and P2P computing. Data integration aims to hide heterogeneities of distributed sources. However, most of data integration solutions(More)
Mediation systems allow integration of disparate and heterogeneous data sources. Unfortunately, with the increasing number of integrated sources, especially in the context of web, mediator’s responses time increases considerably while the answers are not adapted to users profiles. In this paper, we present a personalization layer that makes the mediation(More)
Digital libraries are more and more available on the web. Unfortunately, their heterogeneity and distribution make retrieving information from them a difficult process. To overcome these difficulties, several solutions have been proposed. We adopt a virtual data integration approach based on mediation to access various digital libraries. In this context, a(More)
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