Software Design Measures

Software Design Measures

Software design measures are used to assess and estimate the various design aspects of the software like its structure , size and quality . The design measures depend on approaches of software design [2] . These measures can be broadly classified into two main categories . Function oriented design measures : the measures are obtained from functional decomposition . They are represented in various structure charts and various measures can be computed from the chart . Object oriented design measures : The overall design can be represented in class diagram and measures are computed from the

class diagram . Internal component measures can also be found

The system quality is greatly influenced by its package relationship The metrics for the quality can be computed based on the relationships Some of the measures like degree of reusability and maintainability help to evaluate the quality of the software . The various metrics offer the guidance on the quality of software design . The design metrics are used by designers to verify that whether design exhibits qualities and goals expected . Stability and abstractness are some of the examples of software design measures [2]

Stability Measure : Stability can be measured by calculating how the changes in packages affect the other packages in the application . In most of the applications , packages depend on other packages . The number of incoming and outgoing dependencies determines the stability and instability of a package . The stability is less if the package has higher number of outgoing dependencies . Stability is calculated by comparing both dependencies . The number of...