Data Definition Language The SQL data-definition language(DDL)allows the specification of information about relations,including: The schema for each relation. The domain of values associated with each attribute. Integrity constraints And as we will see later,also other information such as 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-6th Edition 3.4 @Silberschatz,Korth and SudarshanDatabase System Concepts - 6 3.4 ©Silberschatz, Korth and Sudarshan th Edition Data Definition Language The schema for each relation. The domain of values associated with each attribute. Integrity constraints And as we will see later, also other information such as 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. The SQL data-definition language (DDL) allows the specification of information about relations, including: