Evolving legacy system features into fine-grained components
Proceedings of the 24th International Conference on Software Engineering
Iterative Reengineering of Legacy Systems
IEEE Transactions on Software Engineering
Journal of Systems and Software
Editorial: Data migration: A theoretical perspective
Data & Knowledge Engineering
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Information systems are critical assets for modern enterprises and incorporate key knowledge acquired over the life of an organization. These systems must be updated continuously to reflect evolving business practices. Unfortunately, repeated modification has a cumulative effect on system complexity, and the rapid evolution of technology quickly renders existing technologies obsolete. Eventually, the existing information systems become too fragile to modify and too important to discard. For this reason, organizations must consider modernizing these legacy systems to remain viable. The commercial market provides a variety of solutions to this increasingly common problem of legacy system modernization. Understanding the strengths and weaknesses of each modernization technique is paramount to select the correct solution and the overall success of a modernization effort. This paper provides a survey of modernization techniques including screen scraping, database gateway, XML integration, CGI integration, object-oriented wrapping, and 驴componentization驴 of legacy systems. This general overview enables engineers performing legacy system modernization to pre-select a subset of applicable modernization techniques for further evaluation.