Lehrgebiet Informationssysteme

FB Informatik

LG IS

AG DBIS

(C) AG DBIS

Modeling with KRISYS: the Design Process of DB Applications Reviewed

N. M. Mattos, M. Michels

University of Kaiserslautern
P.O. Box 3049, 67653 Kaiserslautern, Germany
e-mail: haerder@informatik.uni-kl.de

Full paper (postscript version compressed by gzip)

Abstract:

During the last few years, various approaches to an extension of existing models with abstraction mechanisms have been proposed. Abstraction concepts enrich the semantics of the underlying data or knowledge model, but advocate modeling methodologies which are quite different from conventional ones: these mechanisms, in contrast to existing DB techniques, support a modeling process in a step wise fashion. Our KBMS prototype KRISYS allows for such an incremental construction of data or knowledge bases by means of a complete and integrated support of the abstraction concepts provided by its knowledge model. In this paper, we show how the user can employ KRISYS to model some real world situations, thereby demonstrating that the abstraction concepts are at the focal point of the mentioned incremental modeling process.

Published in Proc. 8th Int. Conf. on Entity Relationship Approach, Toronto, Canada, 1989, pp. 159-173.