This type of development is often planned using a Gantt chart – we complete one phase before moving on to the next phase.
In Waterfall approaches, we will rarely aim to re-visit a ‘phase’ once it’s completed. So when our clients provide us the request, we must get the clearly and fully request to analyze it and do right the first time!
Different to SCRUM, the waterfall model is a sequential process, in which progress is seen as flowing steadily downwards (like a waterfall) through the phases of Conception, Initiation, Analysis, Design, Construction, Testing, Production/Implementation and Maintenance.