There are a myriad of new directions in which databases are growing, presenting new and exciting challenges that promise flux in the whole society, because of the impact and changes the database systems have provoked almost everywhere in modern life. This ranges from the way the organizations operate and make their business decisions, to the use of portable devices with database involvements. The Encyclopedia of Database Technologies and Applications is a collection of diverse topics related to databases, providing an overview not only of the state-of-the-art of classical subjects but also clear and concise explanations of the latest technology, its practical applications and research directions. This encyclopedia includes articles written by experts and respected authorities in the database field, providing the most widely accepted scholarly views and perspectives. This important new publication offers researchers, scholars, students and professionals access to the latest knowledge related to database science and technology.