Design and Analysis of Metrics for Component-Based Software Systems

Component-based Software Engineering (CBSE) is a paradigm that aims at constructing and designing systems by using a pre-defined set of software components. A component is a reusable, self -contained piece of software with well -specified interface that is independent of any application. Main advantages of this approach are low cost, high quality and less time to develop applications along with several others . There are many software component models available in the industry, for example: Microsoft’s COM (Component Object Model), DCOM, .NET Framework, Sun’s Java Beans, EJB (Enterprise Java Beans), J2EE Specification and OMG’s (Object Management Group) CORBA (Common Object Request Broker Architecture). However, besides several advantages, CBSE st ill faces many problems. The research aspect of component quality assessment, with emphasis on quantitative approaches, is fairly unexplored. The few existing evaluations are performed at a qualitative level. In traditional approach, most of the metrics mo dels are based on source code analysis, which can not be used in component -based systems. Due to the black -box nature of the components, it requires considerably different approach for quantitative analysis of quality aspects. OBJECTIVES OF THE PROPOSED WO RK In this work, the main emphasis is on quantitative evaluation of metrics for various functional and non-functional aspects of software components and their impact on the system, they are integrated in. Also, it proposes a quality model for estimation of quality for software components. Following are the objectives which are explored in this study: Objective 1: To identify the metrics for software components. Metrics have been thoroughly studied and explored for several quality features of component-based systems. These features include complexity, customizability,