Life Cycle Models

1. Water Fall Model 2. Prototype Model Throw away Model Evolutionary Model Spiral Model Water Fall Model: Prototype Model: Throw away Model: If the requirements are not stable or not clear. Evolutionary Model: When the requirements are unstable/ or dynamic from the client side. Prototype Model Fig: Spiral Model: It’s a Scientific Model. It Contains Water Fall and Prototype Model. It Will Be 100% Error Free Code. Components of Process Model: Dataflow Diagram –DFD 1. Context Flow Diagram (CFD) / Level 0 Diagram. 2. Level1, Level2… Mini- Specifications Data Dictionary.