The Waterfall Model is a linear, sequential approach to software development and testing that was first introduced in the 1970s. In this model, each phase of the software development life cycle (SDLC) is executed in a sequential manner, and testing begins only after the previous phase is completed. The phases of the Waterfall Model typically include requirements gathering, design, implementation, testing, deployment, and maintenance.
In manual testing, the Waterfall Model is often used to plan and execute tests in a systematic manner. Testers first review the requirements and design documentation to understand the application under test, and then create test cases based on these documents. Testing begins only after the implementation phase is completed, and testers execute the test cases to verify that the application meets the specified requirements.
The Waterfall Model is known for its rigid, step-by-step approach to testing, which can make it easier to plan and execute tests in a systematic manner. However, it can also be inflexible and can make it difficult to make changes to the testing process once testing has begun.
