Coupling (computer programming): Difference between revisions

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A module here refers to a subroutine of any kind, i.e. a set of one or more statements having a name and preferably its own set of variable names.

;{{anchor|Content coupling}}Content coupling (high): Content coupling is said to occur when one module uses the code of other module, for instance a branch. This violates information hiding -– a basic design concept.

;{{anchor|Common coupling}}Common coupling: Common coupling is said to occur when several modules have access to the same global data. But it can lead to uncontrolled error propagation and unforeseen side-effects when changes are made.

;{{anchor|External coupling}}External coupling: External coupling occurs when two modules share an externally imposed data format, communication protocol, or device interface. This is basically related to the communication to external tools and devices.

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<ref name="Yourdon_1979">{{Cite book |title=Structured Design: Fundamentals of a Discipline of Computer Program and Systems Design |author-last1=Yourdon |author-first1=Edward |author-link1=Edward Yourdon |author-last2=Constantine |author-first2=Larry LeRoy |author-link2=Larry LeRoy Constantine |date=1979 |orig-year=1975 |publisher=Yourdon Press |pages= |isbn=978-0-13-854471-3 |id={{ISBN|0-13-854471-9}} |bibcode=1979sdfd.book.....Y}}</ref>

<ref name="Beck_2011">{{cite book |author-first1=Fabian |author-last1=Beck |author-first2=Stephan |author-last2=Diehl |chapter=On the Congruence of Modularity and Code Coupling |title=In Proceedings of the 19th ACM SIGSOFT Symposium and the 13th European Conference on Foundations of Software Engineering (SIGSOFT/FSE '11) |___location=Szeged, Hungary |date=September 2011 |doi=10.1145/2025113.2025162}}</ref>

<ref name="Arisholm_2004">{{cite journal |author-first1=Erik |author-last1=Arisholm |author-first2=Lionel C. |author-last2=Briand |author-link2=Lionel C. Briand |author-first3=Audun |author-last3=Føyen |title=Dynamic coupling measurement for object-oriented software |journal=[[IEEE Transactions on Software Engineering]] |publisher=[[IEEE]] |volume=30 |number=8 |pages=491-506491–506 |date=August 2004 |doi=10.1109/TSE.2004.41}}</ref>

<ref name="Pressman_1982">{{cite book |author-last=Pressman |author-first=Roger S. |author-link=Roger S. Pressman |date=1982 |title=Software Engineering - A Practitioner's Approach |edition=4 |isbn=0-07-052182-4 |url-access=registration |url=https://archive.org/details/softwareengineer00pres_0 }}</ref>

}}

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== Further reading ==

* {{Cite book |author-last=Myers |author-first=Glenford J. |author-link=Glenford J. Myers |title=Reliable Software through Composite Design |publisher=Mason and Lipscomb Publishers |___location=New York |date=1974}}

* {{Cite journal |author-first1=A. Jefferson |author-last1=Offutt |author-first2=Mary Jean |author-last2=Harrold |author-link2=Mary Jean Harrold |author-first3=Priyadarshan |author-last3=Kolte |title=A Software Metric System for Module Coupling |journal=[[Journal of Systems and Software]] |volume=20 |number=3 |pages=295-308295–308 |date=March 1993}}

* {{Cite book |author-first=Meilir |author-last=Page-Jones |title=The Practical Guide to Structured Systems Design |publisher=Yourdon Press |___location=New York |date=1980 |isbn=978-8-12031482-5}}

* {{Cite book |publisher=[[IEEE]] |title=Standard Glossary of Software Engineering Terminology |id=610.12_1990 |___location=New York |date=1990 |isbn=0-7381-0391-8}}