Cs635

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Cs635

  1. 1. Decision Support with Web-Enabled Software by Marc-David Cohen Charles B. Kelly Andres L. Medaglia
  2. 2. What is a legacy system? <ul><li>“ Large software systems that we do not know how to cope with but that are vital to our organisation” (Bennett, 1995) </li></ul><ul><li>“ Legacy Software is critical software that cannot be modified efficiently” (Nicolas Gold, 1998) </li></ul>
  3. 3. Modernization Approach IRP : Inventory Replenishment Planning APS : Advanced Planning and Scheduling PDIO : Production Distribution and Inventory Optimization
  4. 4. Pros and Cons of Legacy Systems <ul><li>Company’s transaction history </li></ul><ul><li>“ Wide-spread usage and acceptance within the organisation” (Stenbeck, 2001) </li></ul><ul><li>Linking via other application is hard/impossible </li></ul><ul><li>Difficult to change </li></ul>
  5. 5. Modernization Benefits <ul><li>Improved decision making </li></ul>Improved productivity Better time to market Improved planning & monitoring Reduced levels of stock Accuracy & consistency of information
  6. 6. References <ul><li>http://www.comp.lancs.ac.uk/computing/users/oboler/LEGACY2.DOC </li></ul><ul><li>http://www.softresources.com/topics/methodology/legacy_systems.htm </li></ul><ul><li>http://www2.cio.com/consultant/report2337.htm l </li></ul><ul><li>http://www.developer.com/mgmt/article.php/1492531 </li></ul><ul><li>http://oipr.depaul.edu/open/general/poster_2.ppt </li></ul><ul><li>http://www1.sungard.com/sungard/europa/sungardeuropa2004/images/sungardeuropalivingwithyourlegacy15jun04v1.pdf </li></ul><ul><li>http://www.zjournal.com/PDF/erlikh.pdf </li></ul>

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