A (Very) Brief Introduction to SQL

SQL stands for Structured Query Language. It provides a standardized syntax by which different types of databases can be queried. Most SQL database products provide their own extensions to the language, just as many browsers provide their own extensions to HTML. Nonetheless, an understanding of SQL enables you to work with a wide range of database products across multiple platforms.

This book cannot describe all the intricacies of SQL. In this section we attempt to cover a little background, however.

Most database applications such as MySQL run as a server daemon to which users on the same or even remote machines can connect. Once connected to the server, you can select a database if you have the privileges ...

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