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Why is Cohesion the Primary Foundation of Software Design?

By Jonathan Massa
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Definition Of Cohesion

When speaking of cohesion, at some point we will have to look at the subject with a little bit of mathematic viewpoint. To put it simply for the beginning, in software engineering, cohesion is a basic formula calculating strength of connection among methods of data analysis and classification to create a union for certain purposes.

Coupling And Cohesion

Except for cohesion, in software engineering we also have the term coupling. So, why are we comparing them? Because they are connected, serving pretty much one basic purpose, but on different levels. Coupling analyses internal relationships between modules, but as for cohesion, it analyses how related the roles within a single module are.

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Cohesive = Effective

Team work always gives us better results. The term “cohesive” means working on the foundation of effective union. Clearly, even if we take the simplest physical machines, we cannot make them work correctly, unless all insider elements are working harmonically and simultaneously. Funny how music can be a great example. One note taken wrong and it ruins the whole symphony, not to mention that even an unprofessional listener can notice that one small disruption.

A.K.A. Sliding-Scale Metrics

As mentioned in previous paragraphs, cohesion is all about processing and analyzing internal elements of a specific module we have in mind. There are certain classical methods and strategies in cohesion and they have to be measured according to their functionality. Especially, when we are speaking of software engineering, functionality is a must!

Element Analysis

Research methods are in every field, especially in marketing and even more in digital marketing. Well, what analysis can come before research in the first place right? Now, let’s review certain qualities of element analysis in the cohesion principle and how well-based are they on general research.

  • Coincidental-Processing particles are grouped in an arbitrary manner and have no significant communication/connection. Well, clearly the laziest and possibly the most unwanted analysis you want to base your further actions on.
  • Logical-From a module viewpoint, processing elements are belonged to one-another because they match with the similar logical class of connected functions. Invoking the module simultaneously invokes the processing element.
  • Temporal-Processing particles are connected in time aspect. They are grouped with one-another because those are invoked simultaneously at a particular timing in a program implementation, but quite funny enough, they are not related to each other. A different program requirement may require a different combination of processing the elements stated above.
  • Procedural- Processing insider elements are in logical order- part of the same functionality unit but do not share the same data. They are connected, because they continually follow a specific sequence of implementation.
  • Communicational-Processing elements on the functional quality of implementing inputs and outputs in your software design.
  • Sequential- Processing component are related when the output of one processing component can be used as input for the next component element. Think of it as a chain reaction in its own way.
  • Functional-By far the best and most effective element grouping strategy. All processing components of a module are vital to the performance of a single and specific task. Maybe for this one we can say, that focus is the base concept.

Digital Team-Work

Now, that we have discussed so many grouping, analysis and research strategies in the paragraphs above, let’s look at the subject in a relatively non-mathematical viewpoint. The whole point of the given concept is to pretty much choose functionally matching components of a module for your effective software design. Functionality and effectiveness will manifest themselves in how your software works for you or against your interests.

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By Jonathan

Technology Expert


Jonathan Massa

As a specialist in digital consulting, strategy and execution, Jonathan advises organizations on strategic and operational issues related to value creation and digitalization programs focusing on innovation and organic growth. Furthermore, he advises our clients on software engineering and digital development issues to enable them to mobilize the right solutions for their goals.


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