A RAPID MAPPING CONVERSION METHODOLOGY TO A COMMERCIAL-OFF-THE-SHELF SYSTEM
The adoption of commercial-off-the-shelf (COTS) packages has benefits, but it also has challenges and pitfalls. The conversion of a legacy system to a new system based on a COTS package demands a dedicated guidance. This paper proposes a new methodology, SUCADA ("Simplified Use Case Driven Approach"), that provides step by step guidelines for the conversion of a legacy system to a COTS package. The methodology uses an iterative approach to converting legacy systems to a COTS package through the use of simplified business Use Cases. It aims for rapid mapping of the functional requirements of the legacy system to a COTS package. The methodology also provides strategies to deal with legacy functionality not supported by a COTS package. This paper also presents the findings of a case study on the application of the proposed methodology for the conversion of a legacy Laboratory Information Management System (LIMS).
methodology cots sucada use cases system development conversion of legacy system product evaluation and selection process guidance