What is the history of the waterfall methodology?

What is the history of the waterfall methodology?

The waterfall methodology originated in the 1970s, primarily in software development. It was first introduced by Dr. Winston W. Royce in a paper where he described a sequential design process.

Why was it called the waterfall methodology?

It was called the waterfall methodology because the process flows downwards like a waterfall through distinct phases: requirements, design, implementation, verification, and maintenance.

What are the main phases of the waterfall model?

The main phases are: 1) Requirements analysis, 2) System design, 3) Implementation, 4) Integration and testing, and 5) Maintenance.

What are the advantages and disadvantages of using this methodology?

Advantages include clear structure and documentation, while disadvantages are inflexibility and difficulty in accommodating changes once a phase is completed.