Difference Between Coupling And Cohesion In Software Engineering Ppt
• ISO/IEC/IEEE Systems and software engineering — Vocabulary • ISO/IEC TR, Software Engineering — Guide to the Software Engineering Body of Knowledge (SWEBOK) • F. On the Congruence of Modularity and Code Coupling. In Proceedings of the 19th ACM SIGSOFT Symposium and the 13th European Conference on Foundations of Software Engineering (SIGSOFT/FSE '11), Szeged, Hungary, September 2011.: • Pressman, Roger S.
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Types Of Coupling And Cohesion In Software Engineering Ppt
Coupling and Cohesion COUPLING and COHESION COUPLING An indication of the strength of interconnections between program units. Highly coupled have program units dependent on each other. Loosely coupled are made up of units that are independent or almost independent. Modules are independent if they can function completely without the presence of the other. Obviously, can't have modules completely independent of each other. Must interact so that can produce desired outputs.
The more connections between modules, the more dependent they are in the sense that more info about one modules is required to understand the other module. Three factors: number of interfaces, complexity of interfaces, type of info flow along interfaces. Want to minimize number of interfaces between modules, minimize the complexity of each interface, and control the type of info flow. An interface of a module is used to pass information to and from other modules. In general, modules tightly coupled if they use shared variables or if they exchange control info. Loose coupling if info held within a unit and interface with other units via parameter lists. Tight coupling if shared global data.