difference between coupling and cohesion in software engineering ppt

How focused is W at fulfilling a single responsibility? Very generic coupling, the most compatible bricks.Ī measure of how strongly related the various functions of a single software component are. The next two rows demonstrate coupling dependencies. Low coupling is desired because it allows components to be used and modified independently from one and other. For those of you keeping score at home, high cohesion is the realization of the S, Single Responsibility, in SOLID object-oriented design.Ī measure of the degree to which a component depends upon other components of the system. Low coupling allows components to be used independently from other components. High cohesion increases the probability that a component can be reused in more places, by limiting its capabilities to small well-defined tasks. Loose (Low) coupling and High (Tight) cohesion are the desirable properties for components in software.

This paper discusses characteristics of 'good' programming practices that can reduce maintenance and modification costs for software.

I believe the source of the terms Coupling and Cohesion is from a paper called, Structured Software Design (1974), Wayne Stevens, Glenford Myers, and Larry Constantine. Will you be able to reuse it? Will you be able to adapt it? Will you need a shoe-horn to force that new feature in the future? These questions are much simpler to answer when you can properly gauge the level of Coupling and Cohesion of your components. These are important because they have a direct effect on how flexible and maintainable your software will be as your software continues to e developed. Coupling and Cohesion are two properties that deserve your attention when you design software.

Difference between coupling and cohesion in software engineering ppt