AN EMPIRICAL VALIDATION OF QUALITY TESTING MODEL FOR OBJECT ORIENTED DESIGN

This paper describes an improved Quality Testing Model for Object Oriented Design (QTMOOD) for the assessment of high-level design quality attributes in object-oriented design. The proposed model relates design properties such as encapsulation, inheritance, polymorphism, coupling and cohesion to a reduced set of attributes such as efficiency, complexity, understandability and reusability from SATC’s identified set of quality attributes. The relationship between quality attributes and design properties are weighted in accordance with their respective influence and importance of design properties on quality attributes. The model is validated empirically. Empirical data is collected from various application domains, and then analyzed using QTMOOD to support the validation. The result indicates that the proposed model may be used to provide an overall quality assessment of object-oriented software in early phase of development life cycle. Early use of the model may help to ensure that the favorable internal design properties will lead to the development of quality end product. However, further the experiment is required on a large scale of data in order to generalize and standardize the model