SQL stands for Structured Query Language. It is a standard language for accessing and manipulating databases.

What is SQL?

• SQL lets you access and manipulate databases
• SQL became a standard of the American National Standards Institute (ANSI) in 1986, and of the International Organization for Standardization (ISO) in 1987

SQL Statements

Types of SQL statements

• Data Definition Language (or DDL) statements are used to define, change, or drop database objects such as tables.

e.g. CREATE, ALTER, DROP

• Data Manipulation Language (or DML) statements are used to read and modify data in tables.

e.g. SELECT, INSERT, UPDATE

• Data Control Language (DCL)
• Transaction Control Language (TCL)