5 Types of Essential SQL Commands That Empower Your Data Analysis 

Data Query Language 

Data Control Language 

Data Manipulation Language 

Transaction Control Language  

Data Definition Language 

Data Definition Language 

DDL commands create, modify, and delete database structures, but not data. Some DDL commands are: · CREATE · DROP · ALTER  · TRUNCATE · RENAME  

Data Query Language 

There is only one DQL command, SELECT, and it is used to select data from a database based on the query passed to it. 

Data Control Language 

DCL commands are used to deal with rights, permissions, and other controls in the database system. DCL statements are grouped with DML statements (see the next page) to give, remove, or reset specific manipulation privileges. The primary DCL commands are: · GRANT · DENY · REVOKE   

Data Manipulation Language 

DML commands manipulate the data in a database. The major DML commands are: · INSERT · UPDATE · DELETE · SELECT  

Transaction Control Language 

Transactions combine several tasks into a single unit of execution. The major TCL commands are: · COMMIT · ROLLBACK · SAVEPOINT

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