![]() The Java-based command line interface CBShell allows for easy scripting of commands directed to a Concept- Base server. The communication between the user clients and the object base is organized in a client-server architecture using TCP/IP. ![]() The Java-based user interface CBIva offers a palette of graphical interfaces, such as an Telos editor and a graph editor. deductive rules can be restricted to modules, formulated for meta classes, employed in active rules using functional definitions to compute properties, and be revised without overwriting the earlier definitions. These principles are combined orthogonally, e.g. Modeling is supported by meta classing, deduction and integrity checking, active rule speci- fication, functional definition of computation, a module concept, and a rollback mechanism for querying past database states. The deductive query language is seamlessly integrated into the meta class hierarchy. ![]() It uniformly represents all information regardless of its abstraction level (data, class, meta class, meta meta class etc.) in a single data structure called P-facts. The system implements O-Telos, a dialect of Telos integrating deductive and object-oriented paradigms. Contributing authors: Manfred Jeusfeld, Martin Staudt, Hans Nissen, Christoph Quix, Lutz Bauer, Rainer Gallersd̈oerfer, Michael Gebhardt, Matthias Jarke, Thomas List, Ren e Soiron (in short ConceptBase) is a multi-user deductive object manager intended for conceptual modeling, metamodeling, and coordination in design environments.
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