life software cicle model

life software cicle model

1. SOFTWARE DEVELOPMENT LIFE CYCLE MODEL

   • The term software development life cycle model is a way of describing the planning, designing, coding, and testing of a software system
     • Requirements- Design- Implementation -Testing

2. WATERFALL LIFE CYCLE MODEL

   • The Waterfall life cycle model, also known as the classic or linear-sequential life cycle model, is one of the simplest to understand and use.
     • Requirements, Design, Implementation and Unit Testing ,Integration and System Testing Operation

3. V-SHAPED LIFE CYCLE MODEL

   • Like the Waterfall model, the V-Shaped life cycle model provides a sequential path of discrete phases that must each be completed before development proceeds to the next phase
   • High Level Design Unit Testing Low Level Design Implementation Unit Test Planning Integration Test Planning System Test Planning Requirements Integration Testing System Testing

4. INCREMENTAL LIFE CYCLE MODEL

   • The Incremental life cycle model builds an iterative approach into the Waterfall model. Development projects are divided into several smaller, more manageable iterations. Each iteration passes through a mini-Waterfall process
     • Requirements Design Implementation and Unit Testing Integration and System Testing Operation

5. SPIRAL LIFE CYCLE MODEL

   • The Spiral life cycle model is similar to the Incremental model but incorporates risk analysis. It is divided into four phases: planning, risk analysis, engineering, and evaluation. A project passes through each of these phases in sequence, repeatedly, in a series of iterations called spirals.
     • Planning Risk Analysis Evaluation Engineering Project Cost Risk Analysis Prototyping Coding Testing Customer Evaluation Requirements Gathering