SDLC Waterfall

Seven phases of the systems‐development life cycle methodology

The SDLC methodology is sometimes referred to as the waterfall

methodology to represent how each step is a separate part of the

process; only when one step is completed can another step begin. After

each step, an organization must decide whether to move to the next step

or not. This methodology has been criticized for being quite rigid. For

example, changes to the requirements are not allowed once the process

has begun. No software is available until after the programming phase.

Again, SDLC was developed for large, structured projects. Projects using

SDLC can sometimes take months or years to complete. Because of its

inflexibility and the availability of new programming techniques and tools,

many other software‐development methodologies have been developed.

Many of these retain some of the underlying concepts of SDLC, but are

not as rigid.

 

 

 

 

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