Structured Query Language is used to allow database developers to generate queries and interrogate the data held in a database. SELECT, FROM, WHERE, AND and OR are key areas of SQL.
SQL stands for Structured Query Language. it is used to allow database developers to interrogate the data held in a database. SQL is used to generate queries.
The examples in this guide are based on a database for a school that has three tables:
Below is a useful explanation of what SQL is a how it is used:
BBC's Simon Lumb explains what SQL is and how it is used in databases