Project Management - SDLC

Explain the popular Software development life cycle models.

Answer

Waterfall model
This is the oldest model. It represents sequence of stages; output of one stage becomes input of others.

Spiral Model
This is improved version of waterfall model. Here we have scope to reiterate and go back to the earlier stages number of times as project progresses.

Build and fix model
This is a risky and most unorganized model. In this, developers keep writing code until the customer is happy.

Rapid Prototype Model
In this model, we develop prototype which acts like a final product. Once prototype is approved, then the actual development starts.

Incremental Model
In this model, the product is divided into sections and each section of the product are created and tested separately. 

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