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Explain SQL QUERY COMPONENTS

Written By Unknown on Sunday, 21 April 2013 | 6:45 pm

Explain SQL QUERY COMPONENTS



Components of SQL Query:

DDL (Data Definition Language) :–
It is a set of SQL commands used to create, modify, and delete database structures but not data.
Ex: CREATE, ALTER, DROP

DML (Data Manipulation Language) :–
It is the area of SQL that allows changing data within the database.
Ex: INSERT, UPDATE, DELETE

DCL (Data Control Language) :–
It is the component of SQL statement that control access to data and to the database.
Ex: GRANT, REVOKE, COMMIT, ROLLBACK

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