Hocine Grine

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Over the last ten years, evolutions in nomadic terminals and mobile networks led to ubiquitous and pervasive computing. Existing query evaluation and optimization techniques for distributed databases using global schemas and cost models are no longer relevant. Query service, the key element allowing users to access data, must adapt itself to frequent(More)
The query service is the key element enabling users to identify and access data or services. If the growth of mobility in recent years makes it necessary to support different types of queries (continuous, location dependent, spatio-temporal, etc.,), it has also resulted in the emergence of new and specifique evaluation and optimization techniques. These(More)
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