Legacy information systems: issues and directions
Jesús Bisbal, Deirdre Lawless, Bing Wu, Jane B. Grimson · IEEE Software · 1999
A legacy information system represents a massive, long-term business investment. Unfortunately, such systems are often brittle, slow and non-extensible. Capturing legacy system data in a way that can support organizations into the future is an important but relatively new research area. The authors offer an overview of existing research and present two promising methodologies for legacy information system migration.