Software Development Life Cycle is a systematic approach to develop software. It creates a structure for the developer to design, create and deliver high quality software according to the requirements of customer or end user.
- WaterFall Model: The whole process of software development is divided into separate phases. The outcome of one phase acts as the input for the next phase sequentially. This means that any phase in the development process begins only if the previous phase is complete.
- Iterative Model: It is a method of software development where the product is designed, implemented and tested incrementally. Little more is added each time until the product is finished.
- Spiral Model: Spiral Model is a combination of Iterative Development Modeland Waterfall Model with very high emphasis on risk analysis. It allows for incremental releases of the product, or incremental refinement through each iteration around the spiral.
- V-Model: In this execution of processes happens in a sequential manner in V-shape. It is also known as Verification and Validation Model. V-Model is an extension of the Waterfall Model and is based on association of a testing phase for each corresponding development stage.
- RAD Model: The functional modules are developed simultaneously as prototypes and are integrated to make the complete product for faster product delivery. The customer gets early visibility in the software and can provide feedback on design, delivery, and other requirements.
- Prototype Model: The basic idea here is that instead of freezing the requirements before a design or coding can proceed, a throwaway prototype is built to understand the requirements. This prototype is developed based on the currently known requirements.
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