Tool for Extraction of Functional Requirements from Legacy Code

Abstract-A business rule specifies or restraints one aspect of business that is intended to verify business structure or determine the behavior of our business. Business rules often focus on access control issues. There author has proposed a re-engineering method that is implemented to extract a business rule from legacy source code. With time, generally the valuable documents of system are lost and in absence of documentation it becomes difficult to maintain such legacy codes. A case study is included to check the accuracy of the proposed method. The system is checked against the extracted rule with the functional requirement presented in the SRS of the case study