Nowadays, a web page contains continuous pagination to deal with retrieving lot of data.
This continuous pagination means data views per page doesnt requires to reload a whole page to get next / previous page. It partially reload and attached next data on same page.
So it makes seemingly endless scroll.
This blog post will give you an example on how to do this continuos paging using Asp .Net Ajax capabilities.
Database & Query
I use SQL Server 2008 Northwind Database as sample. Spesifically use Orders, OrderDetails, Products, Employees and Customers tables.
I will make a list of sales transaction along with purchased products, customers and salesman or employees. Total value also being presented.
Below are list of design of tables I used. These list converted into create table statement.