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Term reengineering refers to improve the quality of the system. Continues maintenance and aging degrade the performance of the software system. Right approach and methodology must be adapted to perform reengineering. With lack of right approach and methodology, reengineering itself will be costly and time-consuming. For the process of reengineering main concerns include when to reengineer, how to estimate cost, the right approach for reengineering, and how to validate software enhancement. Thisdoi:10.14569/ijacsa.2019.0100570 fatcat:t5ef5fwnrjhvdflt3cg2kdixue