Modularity is defined as the degree to which a web application or software can be divided into smaller modules. Software Engineering modularity shows that the number of modules can serve a specific business domain. Using prewritten code, modularity saves resources and also provides better software development manageability.
You can modularize a design to simplify the process of planning and implementation, define and deliver software increments, smoothly accommodate changes, and conduct long-term maintenance without any serious side effects.
The fundamental principle of modularity is that systems should be designed from cohesive, loosely coupled modules. This means that a system should be built using different components that work together in an efficient and effective manner.
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Properties of Modularity:
The ability to break down something into smaller pieces is known as decomposability. Sometimes, it is hard to solve a large problem. Modular decomposability breaks down one big problem into smaller subproblems in an organized way. It decreases the complexity and you can work on the subproblems individually.
The ability to be understood or the quality of being comprehensive means understandability. Models are large and complex structures and it is difficult to understand them sometimes. Modular understandability allows you to comprehend each module by making it easier for you to design and develop software and change it according to the requirements. With the help of modular understandability, you can resolve any issue efficiently. \
Composability is defined as the ability to combine the created modules. It gathers the modules into a new system and handles the way two or more components are connected to each other.
Continuity means uninterrupted or consistent connection for a long time. Modular continuity makes changes according to the system’s needs. These changes lead to changes in the modules too, but do not have any effect on the overall system or software.
In case of some abnormal activity, such as an error or failure happening in one module, modular protection defends all the other ones. The side-effects of these errors and failures are restricted within that module and the others are safe.
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Advantages of modularity
- Smaller components are easier to maintain.
- Programs can be divided on the basis of functional aspects.
- The desired level of abstraction can be introduced to the program.
- Concurrent execution can be made possible.
- Components with high usage can be reused.
Businesses face problems regarding complexity, demand, and size on a daily basis. Increased software capability requirements have forced developers to improve systems with new and better functionalities. Software engineering modularity allows you to divide applications into smaller components. Modules are divided on the basis of functionality. New functionalities are easily programmed in separate modules.
Q1: What is the most common example of modularity?
Ans: Modules can be easily removed or replaced without affecting other components. The most common example of modularity is desktop computers because they have easily upgradeable and removable parts.
Q2: Why is modularity important in software engineering?
Ans: Modularity helps in minimizing the complexity of software or problems, making them easier to resolve.
Q3: How do you achieve modularity in software?
Ans: Effective modularity can be achieved if the separated modules are individually solvable, compilable, and modifiable.
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