Reengineering a Mobile Nursing Information System

This is a case-study of the value of the principles of object-orientation. The author was given the task of enhancing the substantial version 1.0 codebase of a certain mobile application, to enable that application to satisfy a crucial usage-requirement evidently not discovered or anticipated during the version 1.0 design-phase. The author attempts to demonstrate that the desired enhancement cannot be robustly and scalably achieved without a substantial re-design of the entire project, thanks largely to failures of the version 1.0 design to avail itself effectively of all of the benefits of the principles and techniques of object-orientation relevant to the project’s requirements.