Software engineering is the study and application of
engineering to the design, development, and maintenance of software.
Typical formal definitions of software engineering are:
"the application of a systematic, disciplined,
quantifiable approach to the development, operation, and maintenance of
software";
"an engineering discipline that is concerned with all
aspects of software production";[5]
and "the establishment and use of sound engineering
principles in order to economically obtain software that is reliable and works
efficiently on real machines."
The term has been used less formally:
as the informal contemporary term for the broad range of
activities that were formerly called computer programming and systems analysis;
as the broad term for all aspects of the practice of
computer programming, as opposed to the theory of computer programming, which
is called computer science;[8]
as the term embodying the advocacy of a specific approach to
computer programming, one that urges that it be treated as an engineering
discipline rather than an art or a craft, and advocates the codification of
recommended practices.
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