describe what is cohesion in modular and object oriented software development pdf

Describe What Is Cohesion In Modular And Object Oriented Software Development Pdf

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Software design is a process to conceptualize the software requirements into software implementation. Software design takes the user requirements as challenges and tries to find optimum solution.

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Analysis of Cohesion and Coupling Metrics for Object Oriented System

In software engineering, the coupling is the degree of interdependence between software modules. Two modules that are tightly coupled are strongly dependent on each other. However, two modules that are loosely coupled are not dependent on each other. Uncoupled modules have no interdependence at all within them. A good design is the one that has low coupling.

Basically, design is a two-part iterative process. First part is Conceptual Design that tells the customer what the system will do. Modularization: Modularization is the process of dividing a software system into multiple independent modules where each module works independently. There are many advantages of Modularization in software engineering. Some of these are given below:.

In software engineering , coupling is the degree of interdependence between software modules; a measure of how closely connected two routines or modules are; [1] the strength of the relationships between modules. Coupling is usually contrasted with cohesion. Low coupling often correlates with high cohesion, and vice versa. Low coupling is often a sign of a well-structured computer system and a good design, and when combined with high cohesion, supports the general goals of high readability and maintainability. Coupling can be "low" also " loose " and "weak" or "high" also "tight" and "strong". Some types of coupling, in order of highest to lowest coupling, are as follows:. A module here refers to a subroutine of any kind, i.

Software Design Basics

Software Architecture pp Cite as. After reading this chapter, you will have an idea of the means you can use to assess, describe, create, and develop architectures Figure 6—1. Unable to display preview. Download preview PDF. Skip to main content.

Analysis of Cohesion and Coupling Metrics for Object Oriented System

Software design is a process to transform user requirements into some suitable form, which helps the programmer in software coding and implementation. For assessing user requirements, an SRS Software Requirement Specification document is created whereas for coding and implementation, there is a need of more specific and detailed requirements in software terms. The output of this process can directly be used into implementation in programming languages. It tries to specify how to fulfill the requirements mentioned in SRS. Modularization is a technique to divide a software system into multiple discrete and independent modules, which are expected to be capable of carrying out task s independently.

Some of the components that can be reuse are as follows; Source code; Design and interfaces; User manuals; Software Documentation; Software requirement specifications and many more. At the end of the design process a design model and specification … Software Engineering This book is an introduction to the art of software engineering. Coupling: In software engineering, the coupling can be defined as the measurement to which the components of the software depend upon each other.

Coupling and Cohesion

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In computer programming , cohesion refers to the degree to which the elements inside a module belong together. In another sense, it is a measure of the strength of relationship between the class's methods and data themselves. Modules with high cohesion tend to be preferable, because high cohesion is associated with several desirable traits of software including robustness , reliability, reusability , and understandability. In contrast, low cohesion is associated with undesirable traits such as being difficult to maintain, test, reuse, or even understand. Cohesion is often contrasted with coupling , a different concept.

Coupling (computer programming)

Design patterns as aspects: a quantitative assessment. Design patterns offer flexible solutions to common problems in software development. Recent studies have shown that several design patterns involve crosscutting concerns.

Analysis of Cohesion and Coupling Metrics for Object Oriented System

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