Ddl Commands | Data Management Software | Sql

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Ddl Commands
  SQL Commands (DDL & Constraints) SCSE/VITCC  Components of SQL ã Data Definition Language (DDL) ã Data Manipulation Language (DML) ã Transaction Control Language (TCL) ã Data Control Language (DCL)  ã Data Definition Language (DDL)  - These SQL commands are used for creating, modifying, and dropping the structure of database objects. The commands are CREATE, ALTER, DROP, RENAME, and TRUNCATE. ã Data Manipulation Language (DML)  - These SQL commands are used for storing, retrieving, modifying, and deleting data. These commands are SELECT, INSERT, UPDATE, and DELETE. ã Transaction Control Language (TCL)  - These SQL commands are used for managing changes affecting the data. These commands are COMMIT, ROLLBACK, and SAVEPOINT. ã Data Control Language (DCL)  - These SQL commands are used for providing security to database objects. These commands are GRANT and REVOKE.
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