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Computer Science Keypoints: System Development Life Cycle (SDLC)

Computer Science Keypoints: System Development Life Cycle (SDLC); System Development Life Cycle (SDLC) is a systematic and structured approach to developing and managing information systems. It encompasses a series of stages that guide the development process from initial identification of a problem to the delivery, maintenance, and eventual phase-out of a system.

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II. Definition of SDLC

SDLC is a framework that defines the processes used to design, develop, test, and maintain information systems. It provides a structured and organized approach to system development, ensuring that projects are completed efficiently, on time, and within budget.

III. Description of SDLC

SDLC involves a sequence of stages, each with specific goals and deliverables. These stages collectively ensure the effective development and maintenance of information systems.

IV. Stages in SDLC

(a) Preliminary Study

Identification of the Problem, Recognition of the Need

Explanation: This stage involves understanding and identifying the problems or needs that necessitate the development of a new system. It sets the foundation for the entire SDLC by defining the scope and objectives of the project.

(b) Feasibility Analysis

Explanation: Feasibility analysis assesses the viability of the proposed system. It includes technical, operational, economic, and scheduling considerations to determine whether the system can be realistically implemented and will provide value to the organization.

(c) Design Implementation

Coding, Testing, Documentation, and Delivery

Explanation: This is the core development stage where the system is designed, coded, tested, documented, and ultimately delivered. The design phase defines the architecture, components, modules, interfaces, and data for the system.

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Coding involves translating the design into actual code. Testing ensures that the system works as intended and meets the specified requirements.

(d) Maintenance Review

Explanation: The maintenance review stage involves monitoring and evaluating the system’s performance and addressing any issues or changes that arise. It aims to ensure that the system remains effective and efficient throughout its operational life.

V. Diagram of SDLC

Explanation: The diagram represents the cyclic nature of SDLC, indicating that after the completion of the Maintenance Review stage, the system may undergo further updates or improvements, restarting the cycle. The arrows signify the flow of activities from one stage to the next, emphasizing the iterative and evolving nature of system development.

In conclusion, SDLC provides a structured approach to system development, ensuring that each stage is well-defined and contributes to the overall success of the project. The iterative nature of SDLC allows for continuous improvement and adaptation to changing requirements throughout the system’s life cycle.

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