Most users when works with large databases for websites with much more records in it and when want to list all results, experiencing problems how to display the data and how to keep small and nice looking web page with fast page load time.
All AJAX Application are based on small requests of data between client and server. Like in the standard HTML form requests, in this AJAX requests have two types of requests - GET and POST.
Each AJAX applications interact between server and client browser on small parts of data. Even this data is small, user have to be informed about progress of operation.