SQL (pronounced "ess-que-el") stands for Structured Query Language. SQL is used to communicate with a database. According to ANSI (American National Standards Institute), it is the standard language for relational database management systems.

SQL is used as a Data Definition Language(DDL) in which we can independently create a database, define the structure, use it, and discard it when its work is done. SQL is used as a Data Manipulation Language(DML) in which we can enter data, modify data, extracting.

SQL is Database Management Systems (DBMS) are software systems used to store, retrieve, and run queries on data. A DBMS serves as an interface between an end-user and a database, allowing users to create, read, update, and delete data in the database.

Structured query language (SQL) is a programming language for storing and processing information in a relational database.

SQL, which stands for structured query language, is a programming language in which the user queries relational databases. Data scientists use SQL in Python in a variety of instances, dictated by the use case at hand or by personal preference.

Benefits of using SQL

• Commonality. One of the main benefits of using SQL is the commonality of the language. 
• Simplicity. Another benefit of using SQL is the simplicity of the language.
• Integration.
• Speed. 
• Alter data within a table.
• Create a table. 
• Retrieve data.
• Change data structure.

These SQL commands are mainly categorized into five categories:

• DDL – Data Definition Language.
• DQL – Data Query Language.
• DML – Data Manipulation Language.
• DCL – Data Control Language.
• TCL – Transaction Control Language.