DCL consists of instructions like GRANT and REVOKE, which are helpful to provide “rights & permissions.” Other permission controls parameters of the database system. This command is used to insert knowledge into the row of a desk. Data Manipulation Language permits you to modify the database instance by inserting, modifying, and deleting its knowledge. It is responsible for performing all forms of knowledge modification in a database. Data Definition Language lets you define the database structure or schema. As you could have observed, the Users worksheet has three columns named id, username and e-mail and the Reviews worksheet has three columns named id , username and content material.
