The KIM QuerySystem An Iconic Interface for the Unified Access to Distributed Multimedia Databases Fabrizio Massimo Ferrara Abstract Introduction In this paper we present the iconic query system of the KIM environment, providing the user with a homogeneous access to distributed, heterogeneous and multimedia databases through a modality independent of the specific underlying environments (i.e. DBMS and physical installations). A prototype of this system is being designed and implemented by a European Consortium under the KIM project, within the European ESPRIT programme. The characteristics of the query system have been identified on the basis of several research contributions, integrated and refined with the actual discussion and validation with a significant number of users in real working environments. Now, a significant nucleus of the prototype is operating and is being experimented with real databases at several pilot sites in Europe, and mainly at the European Space Agency in Frascati (Italy). The basic assumption underlying the KIM approach, is that conceptual (graphical) models can represent a suitable and integrated method to permit the user to access information from distributed, heterogeneous databases without needing to know the actual organisation, models and physical products. Different requirements and classes of users can be
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