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A data control language is a syntax similar to a computer programming language used to control access to data stored in a database. A data control language (DCL) is a syntax similar to a computer programming language used to control access to data stored in a database (Authorization). DCL(Data Control Language) : DCL includes commands such as GRANT and REVOKE which mainly deals with the rights, permissions and other. DCL (Data Control Language) commands are one of the types of commands in SQL that gives the privileges to users to do DDL and DML. Grant and Revoke SQL commands are used to provide a user with permissions to access and perform operations in a database. MySQL What is DDL, DML and DCL? - SQL commands are divided into four subgroups, DDL, DML, DCL, and TCL.