Data Definition Language Allows the specification of not only a set of relations but also information about each relation,including: The schema for each relation. The domain of values associated with each attribute. Integrity constraints The set of indices to be maintained for each relations. Security and authorization information for each relation. The physical storage structure of each relation on disk. Database System Concepts,5th Edition,Oct 5,2006 3.4 Silberschatz,Korth and SudarshanDatabase System Concepts, 5 3.4 ©Silberschatz, Korth and Sudarshan th Edition, Oct 5, 2006 Data Definition Language The schema for each relation. The domain of values associated with each attribute. Integrity constraints The set of indices to be maintained for each relations. Security and authorization information for each relation. The physical storage structure of each relation on disk. Allows the specification of not only a set of relations but also information about each relation, including: