Dear Students,
SDLC models look quite extensive, difficult and confusing to most students. Especially, most find their respective strenghts and weaknesses extremely difficult to understand, learn and, most importantly, retain. However, let me assure that they are not as complex as they seem. In fact, they are simple and capable of scoring full marks for you. Question is how?
First of all, do you remember the movie '3 idiots'? Aamit Khan, in one of the scenes defined 'machine' as, "Anything and everything is a machine." Similarly, any model in this world is nothing but 'the most effective' way do that thing. Assume, you are not building a software. In fact, you are cooking food and whatever you cook, you want it to be excellent quality with optimum cost and time. So if you are cooking Dosa Sambhar, it should:
1. taste like Dosa Sambhar and not anything else.
2. take the time which ideally Dosa Sambhar cooking should take.
3. not waste raw material. That is, if one Dosa needs half a bowl of batter, then your Dosa should take the same quantiy.
This is a universal rule that applies to everything you do.
Now your SDLC models may be applied to cooking Dosa.
1. If you are a newly trained cook and consumer is not very hungry, how would you cook? You will write down the recipe in a stage-wise manner. You will follow as written in the recipe, use exactly the same quantity of ingredients, exactly the same time to cook Dosa on each side. Why? Because, you don't want to take risk. So you plan well and you keep checking with your document in which recipe is written. If you make a change in the recipe, you write it so that you can understand later how it changed your Dosa. Such stagewise model is called - Waterfall Model - because just like waterfall, it comes down stage-wise.
2. But let's say, your customer is cynical and wants a Dosa perfect to his taste. What would you do then? Make a Dosa quickly and give him or her to eat. This Dosa which is an edible Dosa, but not a perfect Dosa is called 'Protoypte'. Now as the customer eats it, he or she tells you the changes. You make the changes and finally a perfect Dosa is ready in the end. Since you first made a Prototype, you call it 'Prototyping Model'.
Similarly, while reading other models, think of what kind of food it may apply to and you will see yuor problems vaporizing into thin air.
For those, who understood, good luck!
For the ones, who need classes, visit my website www.thetrainingtimes.in for more information. Check out my video at https://www.youtube.com/watch?v=RijDAyGYVps
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