The integration of information systems on the basis of information models union of the subject domains

Abstract

Owing to the advances in the informatization of modern society, most organizations when they begin business process reengineering already have some ISs, which eventually also demand reengineering. Due to such reasons there are arising a difficulties of the connection and analyzing the contained information in the miscellaneous sources. It is becoming urgent task of consolidating the existing information systems. Moreover, in this case, the integration of information systems (IS) is actual not so much on the external schema level, i.e. on the user view, as at the data level, actually the part of the IS, which is the information model of the subject domain.