In the field of software engineering, different system development models are utilized to provide a structured approach to the software development life cycle. The Waterfall Model and Prototyping Model are two of the most popular system development models that have been used for several decades. In this paper, we compare and contrast these two models in terms of their advantages, disadvantages, and suitability for different types of projects. The Waterfall Model is a linear sequential approach, where each phase of development is completed before moving to the next phase. The model is suitable for projects that have a clear and well-defined set of requirements and where changes are not expected to occur frequently. However, the model may not be suitable for projects where changes are likely to occur, or where the requirements are not well defined. On the other hand, the Prototyping Model is an iterative approach that involves the creation of a prototype or a working model of the software before the final product is developed. The model is suitable for projects where the requirements are not well-defined, and changes are expected to occur frequently. The model enables stakeholders to get a better understanding of the system and provide feedback before the final product is developed. However, the model may not be suitable for projects with strict timelines and budgets. In conclusion, the selection of a system development model depends on various factors such as the project's scope, timeline, budget, and complexity. Both the Waterfall Model and Prototyping Model have their strengths and weaknesses, and choosing the right model can significantly impact the success of a project.

___________________________________________________________________________________

Keywords: Software Development, Waterfall Model, Prototype Model.