The Facebook API allows web developers to create Facebook applications and access Facebook data from other applications. Facebook API Developers Guide covers the use and implementation of the Facebook API-what the key features are and how you can access them. You will learn, through practical examples, the main features of the Facebook API including an introduction to the API-specific languages FQL and FBML. These examples are further supported by the introduction of other technologies like language libraries, relational database management systems, and XML.