title: difference between agile model and spiral model
body: <p>Can anyone explain me the differences between the spiral and agile  models in simple terms as I am beginner?? Can you give me some real world egs. where spiral is more useful than agile and vice-versa... I know there are so many links available on internet but they are hard to understand as I am a beginner .. So it would be great help if you explain in simple terms?? Thanx in advance...</p>