Web pages that respond to users' requests and gather information from them. Oftentimes, they have built-in links to a relational database, from which they extract data based on input from the user (using dynamic SQL). Dynamic Web pages contain very little actual text. Instead, they pull needed information from other applications. Dynamic Web pages communicate with databases to extract employee directory information, spreadsheets to display accounting figures, client-server database management systems to interact with order processing applications, and more. Because a database already exists, why re-create it for Web page publications?