Tuesday, July 23, 2013

SPIRAL MODEL vs WATERFALL MODEL, AGILE MODEL vs SPIRAL MODEL, AGILE MODEL vs ITERATIVE MODEL



 SPIRAL MODEL AND WATERFALL MODEL

SPIRAL MODEL

WATERFALL MODEL


1] Spiral model is not suitable for small projects.

1] Waterfall model is suitable for small projects.
2] Better risk management.

2] High amount of risk and uncertainty.

3] Process is complex.

3] Easy to understand.
4] The process may go indefinitely.

4] Stages are clearly defined.
5] This model is suitable for long and ongoing projects.


5] This model is not suitable for long and ongoing projects.
6] Iterations are followed
6] Sequence is followed
7] Flexible with user requirements
7] Requirements once fixed cannot be modified
8] Refinements are easily possible
8] Refinements are not so easy
9] Phases  are repeated itself
9] Phases are processed and completed one at a time.