As you know, web is “stateless “, which means new instance of requested page
is created each time the page is posted to the server. HTTP is stateless
protocol , so it can’t hold the client browser information , and move to
next requested web page. If user insert some data and move to next page that
data will lost and user would not retrieve that information. So what up?
Session provides facility to store information on server memory. ……….Good
luck

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