Usually customers buy the goods of their desire from the store using internet. Administrator sell the goods with the help of external databases like oracle, mysql etc at administrator side. But in our proposed system, end user is a departmental store where the application is hosted on the web and the administrator maintains the XML only as data source using which all transactions take place like external database. In this system, the application deployed at the client side, the details of the items are brought forward to the customer from the XML data source. Based on the selection query XML file is updated at the end of each transaction. Also the Small scale vendors must purchase a licensed version of database to maintain data. It is very costly and risky. Because of this reason we are looking to provide a quality service that helps vendor to maintain XML data source within the application. It uses XML pages for representing product details, customer details and transactional details.