Software Development Lifecycle

Software Development Lifecycle (SDLC)

Stages:

1. Analysis:

   • Identify the current system’s functionality and what the new system needs to achieve.
   • Techniques: Questionnaires, interviews, user observations, and existing documentation reviews.
   • Output: System Specification/User Requirements, which outlines what the system should do without defining how to do it.
   • Acts as the agreement between client and project manager.

2. Design:

   • Plan how the system will work, including:
     • Data formats and types.
     • Database design.
     • Input/output interfaces and reports.
     • Data processing methods.
     • Software testing strategies.

3. Implementation:

   • Development and testing of the software.
   • Writing user and technical documentation.
   • Installing the software for the client.

4. Evaluation:

   • Verify the system against the original specification.
   • Ensure it meets all user requirements through comprehensive testing.

5. Maintenance:

   • Corrective: Fixing bugs discovered after deployment.
   • Adaptive: Adjusting the software to meet evolving user requirements.
   • Perfective: Enhancing performance or usability over time.