Software Development

Software Development

1. Software Development Life Cycle Model

   • Requirements-gathering
     • During the requirements-gathering phase the needs of the company are outlined
   • Design
     • Focus shifts from the system`s results to the way in which those results will be achieved and how the ideas of the requirements -gathering phase are accomplished
   • Implementation
     • The result of design phase are translated into program
   • Testing
     • The results of the implementation phase are run through a series of test

2. V-SHAPED LIFE CYCLE MODEL

   • Advantages of the V-Shaped model
     • Process higher chance for success the v-shaped model is appropriate for small, development projects in which requirements are well understood
   • Disadvantages of the V-Shaped model
     • all requirements must be started at the beginning of the project making it difficult to add or change requirements later in the development process

3. WATERFALL LIFE CYCLE MODEL

   • Advantages of the Waterfall model
     • easy to use
   • Disadvantages of the Waterfall model
     • not be used for developing object-oriented software for long-term or ongoing projects, or for projects, or for projects in which requirements are unknown or subject to change

4. INCREMENTAL LIFE CYCLE MODEL

   • Advantages of the Incremental model
     • easter to test and debug because testing is performed incrementally during each iteration on a relatively small amount of new code
   • Disadvantages of the Incremental model
     • cannot be overlapped because requirements -gathering and desing are performed during each iteration and not before development begins