Objetivo The objective of KIWI was to develop a knowledge-based user-friendly system for managing access to external information bases. Four aspects were emphasised: -a knowledge representation formalism, through the development and use of the OOPS language, based on an object-oriented approach -an Advanced Database Environment (ADE), based on the combination of logic programming and databases -the integration of the knowledge representation formalism and ADE within a single concept -an intelligent interface between the end-user and the system, based on graphics. The objective was to develop a knowledge based user friendly system for managing access to external information bases. Four aspects were emphasised: a knowledge representation formalism, through the development and use of the OOPS language, based on an object oriented approach; an advanced database environment (ADE), based on the combination of logic programming and databases; the integration of the knowledge representation formalism and ADE within a single concept; an intelligent interface between the end user and the system, based on graphics. The definition of the OOPS language and its prototype implementation, together with specification of the architecture of the global system, are available. The architecture of the ADE layer has also been achieved, and theoretical work on the concept of the bottom up execution of Prolog programs was performed. State of the art results in the handling of recursive queries were achieved. Demonstrations have been given of the user interface (UI), the knowledge handler (KH) and the advanced database environment (ADE), which are the three main modules, and of the full system. A tight integration between the UI and KH was achieved and shown to be possible between KH and ADE. A final prototype including all the modules of the system (loosely integrated in what concerns KH and ADE) was successfully demonstrated.The definition of the OOPS language, and its prototype implementation together with specification of the architecture of the global system, are available. The architecture of the ADE layer has also been achieved, and theoretical work on the concept of the bottom-up execution of Prolog programs was performed. State-of-the-art results in what concerns the handling of recursive queries were achieved. Demonstrations have been given of the User Interface (UI), the Knowledge Handler (KH) and the Advanced Database Environment (ADE), which are the three main KIWI modules, and of the full KIWI system. A tight integration between the UI and KH was achieved and shown to be possible between KH and ADE. A final prototype including all the modules of the KIWI system (loosely integrated in what concerns KH and ADE) was successfully demonstrated. Exploitation The combination of the deductive powers of logic programming with the data management capabilities of large relational databases will result in powerful computing environments, which will dominate computing in the 1990s. KIWI will contribute substantially to meeting the key requirements for establishing such environments in a multi-paradigm way using object-oriented techniques, logic programming, rule-based formalisms, etc. It will do this especially in the areas of knowledge representation formalisms, recursive queries handling, and the execution of Prolog programs. The results of KIWI constitute the basis for the ESPRIT II project KIWIS (2424). Ámbito científico natural sciencescomputer and information sciencesknowledge engineeringnatural sciencescomputer and information sciencesdatabasesrelational databases Programa(s) FP1-ESPRIT 1 - European programme (EEC) for research and development in information technologies (ESPRIT), 1984-1988 Tema(s) Data not available Convocatoria de propuestas Data not available Régimen de financiación Data not available Coordinador Consorzio per la Ricerca e le Applicazioni di Informatica Aportación de la UE Sin datos Dirección Località Santo Stefano 87036 Rende Italia Ver en el mapa Coste total Sin datos Participantes (6) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo CRI - DDC Dinamarca Aportación de la UE Sin datos Dirección Ver en el mapa Coste total Sin datos Enidata SpA Italia Aportación de la UE Sin datos Dirección Via Paolo di Dona 3/A 00100 Roma Ver en el mapa Coste total Sin datos Institut National de Recherche en Informatique et en Automatique - INRIA Francia Aportación de la UE Sin datos Dirección Domaine de Voluceau-Rocquencourt 78153 Le Chesnay Ver en el mapa Enlaces Sitio web Opens in new window Coste total Sin datos PHILIPS GLOEILAMPENFABRIEKEN NV Países Bajos Aportación de la UE Sin datos Dirección Ver en el mapa Coste total Sin datos UNIVERSITAIRE INSTELLING ANTWERPEN Bélgica Aportación de la UE Sin datos Dirección UNIVERSITEITSPLEIN 1 2610 WILRIJK Ver en el mapa Coste total Sin datos Università degli Studi di Roma 'La Sapienza' Italia Aportación de la UE Sin datos Dirección Via Eudossiana 00184 Roma Ver en el mapa Coste total Sin datos