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The SDLC which is a category of the software development methodologies which gave rise to many other popular models or methodologies such as the waterfall, spiral, prototyping, V model, RUP etc. Let us have a very quick look at most of these very popular software development methodologies:
Waterfall model:
The waterfall model is usually a sequential process where different phases occur 1 by 1 such as the analysis, design, coding, testing, enactment and support. The boundaries between the phases are strongly defined, and the next phase doesn't begin until the prior phases are approved and are approved by our valuable clients.
The 'heavy upfront design' approach which is utilized by the waterfall software development methodology may be suitable for large scale conventional jobs, but there is also the possibility that the product is likely be outdated by the time that it can be released.
Spiral model:
The spiral model is said to be a hybrid of waterfall as well as prototyping. The development is broken up into phases or iterations. A similar set of activities takes place in each phase. Layout, development and testing are done for your limited viewing as every phase goes through an incremental release where as the client’s approval is extremely important on every stage. The spiral model offers lower risk as opposed to waterfall model since design flaws could be exposed earlier than usual.
V model:
The V model offers a strongly structured process which may exactly be like the waterfall model, but gives shorter feedback loops. One arm on the 'V' typically consists of requirements and design stages. User input is obtained upon each phase and changes are produced accordingly before proceeding to the next phase. Software development methodologies are taken very seriously at cooperative computing.
Rational Unified Procedure:
Popularly known as RUP, it is an iterative framework. RUP contains the building blocks of Who (roles), Precisely what (work ) as well as How (tasks). RUP consists of four phases - invention, elaboration, construction and transition. Each phase has a milestone that needs to be met before moving to the next phase. Many software companies customize the RUP model as outlined by their clients’ needs and this software development methodologies upon numerous instances proven to be generally more successful.