Kopplungskriterien

Kopplungskriterien, often translated as coupling criteria, are essential concepts in software engineering and system design. They are used to measure the degree of interdependence between different modules or components within a larger system. High coupling generally indicates that modules are tightly bound, meaning a change in one module is likely to necessitate changes in others. Conversely, low coupling suggests that modules are independent and can be modified or replaced with minimal impact on the rest of the system.

Several types of coupling exist, each representing a different way modules can be connected. Content coupling occurs when one module modifies or relies on the internal data of another module. Common coupling happens when modules share a global data structure. Control coupling arises when one module controls the logic flow of another by passing flags or commands. Stamp coupling occurs when modules share a complex data structure but only use a portion of it. Data coupling, considered the weakest and most desirable form, involves modules communicating by passing simple data parameters.

The primary goal when applying coupling criteria is to achieve low coupling. This promotes modularity, making systems easier to understand, develop, test, and maintain. Modules with low coupling are more reusable and less prone to errors when changes are introduced. Understanding and evaluating coupling is a fundamental aspect of good software design, contributing significantly to the overall quality and longevity of a software system.