Question
Download Solution PDFSoftware coupling involves dependencies among pieces of software called modules. Which of the following are correct statements with respect to module coupling?
P: Common Coupling occurs when two modules share the same global data
Q: control Coupling occur when modules share a composite data structure and use only part of it.
R: Content coupling occurs when one module modifies or relies on the internal working of another module.Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Coupling: It means interaction between components. It is the degree of interdependence between software modules.
Explanation:
Types of coupling are common coupling, control coupling, content coupling, data coupling, stamp coupling.
- Common coupling: It occurs when two modules share the same global data. It is the most undesirable because if we wish to change the shared data, all the procedures accessing this shared data will need to be modified.
- Content coupling: It occurs when one module modifies or relies on the internal working of another module.
- Control coupling: When modules communicate by passing control information. In this one module decides the function of other module or changes its flow of execution.
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