As we discussed that if we want to track user related information or action performed by user we need to maintain session. There are several ways to maintain session as follows. Saving data in Cookies Saving data in hidden field Session management URL rewriting let's have a look one by one each of these ways. 1. Cookies Cookie is a small piece of data sent from website to the client. Containing information like session id, user id etc. Cookie is a small piece of data sent from a website and stored in the user's browser how you can check cookies related data in your computer system if you are a windows user then w Cookie is a small piece of data sent from a website and stored in the user's web browser while the user is browsing it. Every time the user loads the website, the browser sends the cookie back to the server to notify the user's previous activity. [1] Cookies were designed to be a re...