Combining deductive and active capabilities: a systems perspective
Document typeConference report
PublisherUniversitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics
Rights accessOpen Access
Traditionally, database management systems have supported and managed large amounts of shared data (facts or extensional data). This resulted in systems that concentrated on techniques for effi.cient handling of extensional data views in relational systems have essentially been used to provide altemate users' perspective of stored data. There is a large body of work on deductive databases as well as logic programming. Deductive databases not only generalize the relational model, but also provide a theory that supports both declarative and procedural semantics. Various approaches (loosely coupled, tightly coupled, and integrated) have been proposed to combine deductive rules with relational systems. Efforts such as Megalog, LDL, and RDLl have endeavored to integrate rule processing and traditional database functionality. Recent work on active databases and the need for supporting situation mon itoring in the form of event-condition-action rules has prompted a fresh look at the arcbitecture of database systems. The need for integrating active functionality with traditional databases has resulted in the identification of new components (e.g., situation monitor), extensions to existing components (e.g., transaction manager) as well as new results on several issues. lt is evident that non-traditional applications, such as concurrent engineering, process control, situation assessment network management, and cooperative problem solving require both deductive and active capabilities in addition to the functionality provided by a traditional DBMS. In tbis paper, we first analyze the characteristics of the component technologies that are being combined and their interactions in the resulting system. Tbis paper will focus on the overall architecture of the combined system, interaction of the functional components, and their impact on the overall system.
CitationChakravarthy, S. Combining deductive and active capabilities: a systems perspective. A: "Proceedings of the 2nd International Workshop on the Deductive Approach to Information Systems and Databases". Universitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics, 1991, p. 225-226.