Some aspects of information systems integration

The paper describes several increasingly important aspects of information systems integration, of which data integration is given most attention. The common techniques of data integration, such as data consolidation, data federation and data propagation are discussed. Avoiding information inconsistency in the process of data integration can improve data quality. Among the important features of an integrated information system special attention is devoted to the close-loop between the operational and analytical part that can be achieved with an active data warehouse.