waterfall model

The incremental model is an intuitive approach to the waterfall model. Multiple development cycles take place here, making the life cycle a “multi-waterfall” cycle. Cycles are divided up into smaller, more easily managed iterations. Each iteration passes through the requirements, design, implementation and testing phases. A working version of software is produced during the first iteration, so you have working software early on during the software life cycle. Subsequent iterations build on the initial software produced during the first iteration.

Which is requirements needed, after all the information the team will analyze to determine software requirements and generate a report. Then we move to the selection and design, this will occur when the team creates several designs and share with everyone on the project. We will identify any weakness, if we have any successful prototypes it should show how the software will operate. Implementation phase should proceed without any issues if there is any it must be correct during this time. A planned out schedule should allow for any unexpected incidents. When the implementation stage is complete we move to operation when our software has been designed and does what it was designed to do. We will do a review and evaluation which consist of performance, cost and

1. The engineering process requirements of elicitation is reliant on the interaction of the software engineers and the stakeholders of the system. Engineers consult with the customers to gather what requirements are to be provided (requirements gathering).

Requirement Analysis: collect the business needs, document the requirements, and help team members to prepare Functional and enhancement Specification Document and Technical detail design document.

Waterfall Model operates in a waterfall process tree. It has various phases such as requirement, design, implementation, verification, and maintenance that provide a successful execution to any system development. This model can be used in the development of frequent shopper program

The project will be managed using a modified waterfall technique. In this approach, the initial two phases of the

The waterfall lifecycle was the first process model to be introduced and widely known. It is also known as the linear-sequential

After having reviewed definitions and perspectives by three author groups, I’m inclined to conclude that waterfall methodology is essentially defined by its insistence upon the completion of product development steps in a sequential manner in order to accommodate a client’s need for a product or tool that will enable their business to be performed in a temporally defined effective (or desired) manner. By utility, for the sake of quickly delivering a product to the satisfaction of its client, a development team who employs the waterfall method may do so because of waterfall’s logical yet rigid structure. Its step-by-step nature promotes an easy to follow guide, though many of the tasks involved in the process of its development are anything but easy. Further, waterfall’s rigid nature seems to reinforce the notion of its logic, if but for the sake of timely product completion and client budget. Due to its methodological rigidity, however, products developed by way of waterfall may tend to be rigid in their own right.

It has been observed that in software development, change is unavoidable and must be accommodated for in the life cycle. A number of alternative process models have been introduced in order to attempt to fix the issues in the Waterfall model. An early modification to the standard Waterfall method introduced prototyping as a feedback and discovery mechanism to identify misunderstandings and omissions early on in the process (Neill, 2004). Other process models attempted to further get rid of the risks of misunderstandings by breaking down projects

The waterfall model should be used in certain situations. For instance, waterfall models should only be applied when the requirements are clearly known and properly fixed (Tutorials Point, n.d.). They can also be used when there is a stable definition of the product, a distinct understanding of the technology, or when ambiguous requirements are

The waterfall methodology is one of the most prominently recognized and most utilized methods in project management. Whether you’re using the waterfall methodology to manage a project or in some other fashion, let’s say for example, in software development, it works the same in producing a product – in a sequential manner and design, and in a series of stages that follow each other one after another. This means, once a person completes one step they move onto the next step and not before. As this process is sequential, once a step has been completed, the person cannot go back to a previous step – not without scratching the whole project and starting from the beginning. There’s no room for change or error, so a project outcome and an extensive plan must be set in the beginning and then followed carefully.

The original Waterfall model has a foundation that is supported by two distinct characteristics. First, the methodology is rooted in the fact that that the software be developed in stages. “Originally created by Benington in 1956 and later modified by Royce in 1970, the quintessential Waterfall model is linear and sequential in evolution, typically with milestones at each phase of development. (Pavolka, 2005). As seen in figure 1 (Ruparelia, May 2010), the typical thresholds consisted of Evaluation, Requirements, Analysis, Design, Development, Validation, and ultimately Deployment. The evaluation phase, at the aggregate level, helps to reveal the situation at hand. The requirements phase is arguably the most important phase of the Waterfall plan as it lays out the project statement and sets the framework and expectations for the project. The next phase, Analysis, works as a comparison between what capabilities are needed versus what constraints currently exist. That leads into the Design phase in which the software developers determine the architecture required to meet the customer’s expectations taking into account the constraints previously identified. Development is the next phase that takes the inputs from the Design phase and outputs a tangible product ready for testing. The testing or Validation phase is the process in which the software is checked for two things: a) any and all bugs are identified and removed and b) the original scope of work including all

This is the phase where the requirements are noted, feedback regarding requirements are obtained from users

As the waterfall model seems to be the most popular model being used, there are some advantages to using it. The advantages can be seen more in distinct types of organizations and situations. This method is useful in large organizations that are highly structured and is able to emulate the structured needs of the organization. This method works for projects that are less subjective in the nature of what is needed for an outcome. Projects that have a well-defined end result will be able to utilize this method. Completely structured processes and goals are a necessity. The waterfall method allows for easy reporting out on results during project. Each step is very specific in what is to be accomplished at that time so showing defined progress towards can be done easily. Accomplishments towards progress is easily visible due to specifically set progress points.

In software development, there are various types of methods that developers follow in order to produce valuable software. From the many types of methods that exist today, the industry standard that is mostly followed today is the software development lifecycle (SDLC). The SDLC is a process that software development companies utilize in order to design, develop and test software during production. Within the SDLC, there are different test models that developers can utilize based on their business and development requirements. Currently today, the most common models include the waterfall, iterative, spiral and V-model. Regardless of the model that a developer decides to utilize, all the phases will be the same, which would begin with the first step and that is the requirement gathering and analysis phase.