The book is dedicated to the popular MySQL 5.1 DBMS. Practical examples include subqueries, stored procedures, views, triggers, cursors, information schema, task scheduler, segmentation. Much attention is paid to the interaction of client code in PHP with the MySQL DBMS. Two of the most popular libraries are described in detail: the classic php_mysql library and the new object-oriented php_mysqli library. The CD contains distributions and source codes of MySQL 5.05.15.2 for Windows and Linux and graphical clients for MySQL.