Abstract. In a Connected Society, the importance of database privacy and security increases considerably. Security must be considered as a fundamental requirement in Information Sy...
A federated Web-based multimedia information system on one hand gathers its data from various Web sources, on the other hand offers the end-user a rich semantics describing its co...
Information systems development methodologies are still mainly concerned with the research of better ways to provide technical solutions for given organizational problems. The pap...
Though designing a data warehouse requires techniques completely different from those adopted for operational systems, no significant effort has been made so far to develop a comp...
The aim of an information retrieval system is to nd relevant documents, thus relevance is a (if not `the') central concept of information retrieval. Notwithstanding its impor...