SQL DDL, DML, TCL and DCL
DDL is also used to specify additional properties of the data. The storage structure and access methods used by the database system by a set of statements in a special type of DDL called a data storage and definition language. These statements define the implementation details of the database schema, which are usually hidden from the users. The data values stored in the database must satisfy certain consistency constraints. For… Read More »SQL DDL, DML, TCL and DCL
