So before we get into what is data science let us first understand what is data actually, and how it is important for business, e-Commerce, for security, for identity of someone, even for scientific purpose or research and for even much more. So data is nothing but a piece of information , the information that we are collecting could be anything it can be your date of birth, your body weight, your eyes or hair colour, your meal list, what you are searching in your mobile or computer, the places you visit, so we can say anything around you either connected to you or around you can be data. But if someone is novice he will ask, how all these things can be data ? Answer is Data is everywhere but what type of data is our need and which type of data is not our need makes the all difference. Lets understand this clearly through an example- Suppose you want to do some shopping on Amazon, and you decided to buy a new mobile phone, you fixed the budget, then features that you want in the t...