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System Development Life Cycle

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SYSTEM ANALYSIS AND DESIGN
System development life cycle

INTRODUCTION
Systems Development: is the entire process of creating an application, gathering user requirements, designing the database, designing the modules, coding the programs, testing the product and implementing it. The historical perspective provides insights that inform today’s work. The history started with business applications created in the 1950’s, develops under the influence of legacy systems, and evolves together with technological and social factors. The significance of system changes has increased. Moreover, many specialists now need certain skills in the analysis, understanding, and evaluation of the system development and evolution processes. Systems are created to solve problems. Early systems development often took place in a rather chaotic and haphazard manner, relying entirely on the skills and experience of the individual people members performing the work. The history of systems development has a different fundamental change agent, a different factor which may be thought of as driving the history, of stimulating long-run changes. All system development efforts engage in some combination of the below tasks, System conceptualization, System requirements and benefits analysis, Project adoption and project scoping, System design, Specification of software requirements, Architectural design, Detailed design, Unit development, Software integration and testing, System integration and testing, Installation at site, Site testing and acceptance, Training and documentation, Implementation and Maintenance.

System Development in the 1950s
In this period will be that there was any form of systems prior to the advent of the computer. Organizations predated the computer by several years. Such Organizations were concerned with the design of major business processes using work measurement and

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