Software Development Life Cycle

Software Development Life Cycle

1. WATERFALL LIFE CYCLE MODEL

   • Advantages of the Waterfall model
     • simple and easy to use
     • easy to implement
     • is appropriate for small development projects
     • Easy to manage
   • Disadvantages of the Waterfall model
     • usefulness is limited
     • inappropriate for complex projects
     • not be used for developing object-oriented

2. Software Development Life Cycle Model

   • Requirements-gathering
     • the needs of the company are outlined
     • “wish-lists”
     • Questions About the system
     • list of functions
   • Design
     • the designers attempt to turn the dreams of the managers and users into reality.
   • Implementation
     • goal to fulfill the requirements of the company
     • to meet the design outlined in the design phase.
     • automate code generation
   • Testing
     • plan is created to describe the unit tests
       • individual software components

3. V-Shaped Life Cycle Model

   • Advantages of the V-Shaped model
     • simple and easy to use.
     • higher chance for success
     • appropriate for small development projects
     • well understood.
   • Disadvantages of the V-Shaped model
     • inappropriate for most projects.

4. Incremental Life Cycle Model.

   • Advantages of the Incremental model
     • prototype early
     • easier to test and debug
   • Disadvantages of the Incremental model
     • inappropriate for large, longterm projects

5. Spiral Life Cycle Model

   • Advantages of the Spiral model
     • ideal for large-scale and missioncritical
     • software code is developed early
     • software code is developed early
   • Disadvantages of the Spiral model
     • The Spiral model is inappropriate for use in small and medium-scale projects that are not mission-critical.
     • Hard to implement
     • requires highly specific expertise

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