The waterfall methodology is predictive and largely used for more stable projects.The model may be viewed as a divide-and-conquer approach to development. It enables to track project progress across phases and forces the organization to adopt a more structural approach to develop software. The waterfall model also requires documentation to be generated which will be used to test and maintain the system.

Documentation should be a part of the testing and its upto management to plan their test schedule including the time required for the documentation. Consequently, test documentation has become a part of every organization' s software-testing-life-cycle.