Here, the designers or those in charge of the project discuss the system requirements and specifications. The project only moves to the next phase if these questions and other requirements get adequate answers. This phase includes knowing the number of countries that might use the application, finding out if there's a requirement to build an application that supports several languages and the estimated number of users. Since we intend to build software that schools can use for their administration, we start by gathering the necessary information. Clarifications on the requirements are also crucial at this stage. After this, the developers note down the discussion result in a requirements document. Business analysts collect this information and discuss them with a team or client. This phase entails gathering all the requirements necessary to build the project. Here, we shall discuss the phases of the model using a school administration software creation and implementation as an example: Requirement gathering phase Note that it's essential to complete each step before moving to the next. The waterfall model divides all projects into distinct phases and none overlap. Related: What are the different testing types that analysts use? Phases of the waterfall model After a while, they developed other software development models like Agile. It's also the first model used to develop software. Organisations and software development companies use this model to create various digital products. It starts from the upper part and moves downward, touching one stone before the next. Its inventor derived the name from the sequential way water cascades down rocks and stones in a waterfall. It's a straightforward model that ensures project completion in a specified time. This means a specific number of steps in the waterfall model correspond to the project's needs.Įach phase has its objectives and one can't move to the next without completing the previous one. Developers divide the project into phases and outline the goals of each stage. The model uses a sequential system that ensures that a developer completes a phase of the development process before moving to another. Winston Royce created the waterfall model in the 1960s to simplify the software development process. Sometimes, the developers abandoned the software or digital product before completion because of a lack of a simplified approach. In the past, software development took years and several trials before reaching clients or end-users. Related: Software engineering vs computer science: the differences you need to know A brief history of the waterfall model Doing this prevents overlapping phases and makes the process easy to understand and use. It states that a new phase in the development process only begins after completing the previous stage. What is a waterfall model?Ī waterfall model is an approach used for software development. In this article, we discuss 'What is a waterfall model?', detailing the history, phases and implementation, requirements, merits and demerits. Developers and project managers can learn to employ the waterfall model to have maximum control of their project and ensure its completion. Most times, it involves an interplay of human and non-human resources that are uncontrollable. Software development and project management is a demanding and time-consuming process.
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