sdlc process models

planning for the quality assurance requirements and identification of the risks associated with the project is also done in the planning stage. in this stage of sdlc the actual development starts and the product is built. requirement gathering and analysis − all possible requirements of the system to be developed are captured in this phase and documented in a requirement specification document. maintenance is done to deliver these changes in the customer environment. in the iterative model, iterative process starts with a simple implementation of a small set of the software requirements and iteratively enhances the evolving versions until the complete system is implemented and ready to be deployed. in the baseline spiral, when the product is just thought of and the design is being developed a poc (proof of concept) is developed in this phase to get customer feedback. the v-model is an extension of the waterfall model and is based on the association of a testing phase for each corresponding development stage. this is a highly-disciplined model and the next phase starts only after completion of the previous phase.

it is important that the design is compatible with the other modules in the system architecture and the other external systems. the advantage of the v-model method is that it is very easy to understand and apply. customer collaboration − as the requirements cannot be gathered completely in the beginning of the project due to various factors, continuous customer interaction is very important to get proper product requirements. the business model for the product under development is designed in terms of flow of information and the distribution of information between various business channels. the attributes of all data sets is identified and defined. the prototype developed is then presented to the customer and the other important stakeholders in the project. once the actual requirements are understood, the prototype is discarded and the actual system is developed with a much clear understanding of user requirements. extreme prototyping is used in the web development domain.

sdlc is a systematic process for building software that ensures the quality and correctness of the software built. sdlc stands for software development life cycle and is also referred to as the application development life-cycle the requirement is the first stage in the sdlc process. once the requirement analysis phase is completed the next sdlc step is to define and document software needs. in this third phase, the system and software design documents are prepared as per the requirement specification document. it is the longest phase of the software development life cycle process. once the software is complete, and it is deployed in the testing environment. this process continues until the software is bug-free, stable, and working according to the business needs of that system.

the main focus of this sdlc phase is to ensure that needs continue to be met and that the system continues to perform as per the specification mentioned in the first phase. in this approach, the whole process of the software development is divided into various phases of sdlc. for each group, the sdlc model is followed to develop software. in this type of sdlc model testing and the development, the phase is planned in parallel. agile methodology is a practice which promotes continue interaction of development and testing during the sdlc process of any project. this model adopts the best features of the prototyping model and the waterfall model. the spiral methodology is a combination of rapid prototyping and concurrency in design and development activities. it is also useful for academic software development projects.

one of the basic notions of the software development process is sdlc models which stands for software development life cycle models. there is no one single sdlc model. they are divided into main groups, each with its features and weaknesses. sdlc – waterfall model. the waterfall model was the first process model to be introduced. it is also referred to as a software development life cycle (sdlc) is a series of phases that provide a common understanding of, .

sdlc phases phase 1: requirement collection and analysis phase 2: feasibility study: phase 3: software development life cycle models #1) waterfall model. a bit of an anomaly among sdlc methodologies, the big bang model follows no specific process,,

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