What is DDL, DML and DCL?
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Hi sir,
Can you explain me what is DDL,DML and DCL
Teacher SiliconIndia replied to Monday, November 23, 2009
Hi Naveen p,
If you look at the large variety of SQL commands, they can be divided into three large subgroups.
1) Data Definition Language deals with database schemas and descriptions of how the data should reside in the database, therefore language statements like CREATE TABLE or ALTER TABLE belong to DDL.
2) DML deals with data manipulation, and therefore includes most common SQL statements such SELECT, INSERT, etc.
3) Data Control Language includes commands such as GRANT, and mostly concerns with rights, permissions and other controls of the database system.
