Explanation of nouns in waterfall model

Waterfall model is a project development framework. The development process is developed by designing a series of stages. From system requirements analysis to product release and maintenance, feedback will be generated at each stage. Therefore, if there is any information that is not covered or problems are found, it is best to "go back" to the previous stage and make appropriate modifications. The project development process "flows" from one stage to the next, which is also the origin of the name of waterfall model. Including software engineering development and enterprise project development.

Waterfall model has the following advantages.

1) provides a phased project.

2) After the current stage is completed, you only need to pay attention to the later stages.

3) Waterfall model can be used for iterative model.

The waterfall model adopts incremental iteration. Iterate 1 to solve the biggest problem. Each iteration will produce a runnable version and add more functions at the same time. Every iteration must be tested for quality and integration.

4) It provides a template, so that the methods of analysis, design, coding, testing and support have the same guidance under this template.

Waterfall model has the following disadvantages.

1) The division of each stage is completely fixed, and a large number of documents are generated between stages, which greatly increases the workload.

2) Because the development model is linear, users can't see the development results until the end of the whole process, which increases the development risk.

3) Track each project stage through too many mandatory completion dates and milestones.

4) The outstanding disadvantage of waterfall model is that it can't adapt to the changes of users' needs.

, product production and marketing.