What is software engineering? How it is different from computer science?

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Software Engineering

        The term Software Engineering is composed of two words, software and engineering. Software is a program code or set of executable codes containing instructions that give desired functionality. Engineering is the process of designing and constructing something which assists a particular purpose and seeks a cost-effective solution to issues. So, Software engineering is an engineering discipline that is concerned with all aspects of software production from the early stage of requirement specification to maintaining the software after it has gone into use. Software engineering was introduced to address the issues of low-quality software projects.
                                          OR, In other words, Software engineering is an engineering discipline whose focus is to develop cost-effective and high-quality software. 


Difference between Software Engineering and computer science

Computer science focuses on theory and fundamentals: software engineering is concerned with the practicalities of developing and delivering useful software. Computer science is concerned with the theory and methods that underlie computer and software systems. Whereas, software engineering is concerned with the practical problem of producing software. Some knowledge of computer science is essential for software engineers as the same knowledge of physics is essential for electrical engineers.



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