In most of the websites and web portals to maintain the separate data for each user we have login system. By logging in to website we can maintain user details and also manage our account. Same time the website admin can find out visitor activity in the website.
So in order to make this, initially we have to get some details from user. The process of getting the details from user and save it in database is called Registration. In technical terms registration is nothing but creating a unique identity for each member to maintain his data.