A strategic attempt to management of legacy information systems

The paper sets up in a business firm a scene of computer-based information systems that are developed in different times and on different technologies. To look for an answer to the question of how to effectively use the corporate information resource with the given technologies has been the theme of the research. After having addressed the problems caused by the legacy information systems, the paper presents the main theoretical bases, i.e. a semiotic framework and knowledge based approach, and then discusses some of the design and implementation issues.