Estimation of Degree of Connectivity to Predict Quality of Software Design

摘要

The main goal of Object Oriented Methodology is to deliver software which is maintainable. Post_Development_Quality_Requirements such as software maintainability is depending on design quality. Coupling and Cohesion (C&C) are two design quality factors which are measurable. C&C are influenced by structure of a class which is a basic unit of Object Oriented design. Defining the class structure and their relationships measures the design quality which in turn is indicator for quality requirements such as maintainability, reusability and scalability. This paper explores how different dependency types between classes adds on to design complexity and hence software quality by proposing a model which calculates Degree of Connectivity (DC) between the classes and Coupling Index (CI) of overall software. Thus, it is now possible to infer that design quality not only depends on class structure, but also upon the level of relationships such as inheritance, aggregation, composition and association present in software.