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WRAPPING LEGACY INFORMATION SYSTEM TO WEB SERVICES : A CASE STUDY OF ELECTRONIC BANKING

 

TITLE WRAPPING LEGACY INFORMATION SYSTEM TO WEB SERVICES : A CASE STUDY OF ELECTRONIC BANKING
AUTHOR WORALUCK PUTTRANGKUL
DEGREE MASTER OF SCIENCE PROGRAMME IN COMPUTER SCIENCE
FACULTY FACULTY OF SCIENCE
ADVISOR THANWADEE SUNETNANTA
CO-ADVISOR SRISUPA PALAKVANG NA AYUDHYA
 
ABSTRACT
Legacy Information Systems are systems that have been used over a long period of time. Often the systems are large and complex. This makes it difficult to modify or change such a system so that it fits with new kinds of technology or new user requirements. Legacy information systems are usually run on outmoded hardware which are expensive to maintain and there are very few experts who have specific skills in mainframe systems and programming, such as COBOL. These systems are very difficult to expand upon or enhance to integrate them with new applications which may use different technologies. There are several approaches that have been proposed to solve legacy information system problems such as re-development, migration and wrapping. We conducted a comparative study on existing approaches for migration or changing legacy information systems using factors such as complexity, time, cost and risk. We found out that the wrapping approach was the most appropriate in regards to solving the problem of legacy information systems because wrapping is not complex, requires less time, cost and has the least risk. Following that, this research project provided an alternative to solving the problems or limitations of legacy information systems. The newly-proposed framework is called “Legacy information system to Web services (LS2WS)”. Our LS2WS deploys wrapping concepts in order to cause legacy information systems to migrate automatically to web services. We have tested the LS2WS with a case study of electronic banking systems. The result of our work increases the ability to enhance legacy information systems so that they can serve new user requirements in a more efficient way.
KEYWORD WRAPPING / LEGACY INFORMATION SYSTEM / WEB SERVICES

 

 

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