What is SQL ? SQL means Structured Query Language, it is a computer languages. 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. Structured Market Language (SQL) is a portfolio language for information and valuation in a shipment. Includes four beginner-friendly lessons, five practice projects, and four quizzes to test your learning. If you want to learn SQL as quickly as possible, YouTube is a great place to start. Take a Free Course. Some people prefer structured courses. In most cases, you won't need a college degree to work with SQL. These SQL commands are mainly employed to position: DDL – Data Definition Language. DQL – Data Query Language. DML – Data Manipulation Language. DCL – Data Control Language. TCL – Transaction Control La...