PHP is a scripting language commonly used in developing Web applications. Asynchronous JavaScript and XML (Ajax) is a Web technique that combines JavaScript, Document Object Model (DOM), and XMLHttpRequest technologies to provide dynamic interactions between a client and a server. Various PHP class libraries are available for using Ajax with PHP, among them Xajax, an open source, object-oriented, PHP class library. In this article, learn how to implement PHP, Ajax, and Xajax to develop a dynamic Web application solution accessing DB2 9 for Linux, UNIX, and Windows.