In this paper, we outline the features of a knowledge-based retrieval interface MERIT (Multimedia Extensions of Retrieval Interaction Tools), and VODAK, an object-oriented DBMS suitable for multimedia data. MERIT offers access to a subset of the CORDIS databases with data about European research programs, projects, and consortia in the field of information technology. The system features graphical presentations of retrieval results, employs interactive maps for geographical data, and provides scanned-in documents, e.g. photos of contact persons. The database management system functionality of VODAK is extended such that it treats multimedia data, like text, audio, or video, as an integral part of the databases. Furthermore VODAK is an extendible database management system which allows to integrate information from heterogeneous and distributed resources.

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