
Tuesday, October 5, 2010
SQL Command

SQL Commands:
SQL commands are broadly classified into 5 categories: They are
1. DDL (Data Definition Language)
2. DML (Data Manipulation Language)
3. DCL (Data Control Language)
4. TCL (Transaction Control Language)
5. DQL (Data Query Language)
1. Data Definition Language (DDL) - DDL commands are used to Creating, Modifying and Deleting the structure of database objects.
DDL Commands: CREATE, ALTER, DROP, TRUNCATE...