Traditional s/w development, using the Waterfall approach, cherishes engineering process control, which has the following trait:

a. The principal developers of the s/w are engineers.

b. In developing s/w, the development team should focus heavily on identifying all contingencies the application might encounter when put to use.

c. In writing s/w code, the programmers should contrast at least two processes than can lead to a workable s/w solution.

d. Believing that well written s/w should never encounter bugs.