Chapter 1. Introduction to MySQL
MySQL is an open source, multithreaded, relational database management system created by Michael “Monty” Widenius in 1995. In 2000, MySQL was released under a dual-license model that permitted the public to use it for free under the GNU General Public License (GPL); this caused its popularity to soar. The company that owns and develops MySQL is MySQL AB (the AB stands for aktiebolag, the Swedish term for stock company), which is now a subsidiary of Sun Microsystems. Currently, MySQL AB estimates that there are more than 6 million installations of MySQL worldwide, and reports an average of 50,000 downloads a day of MySQL installation software from its site and from mirror sites. The success of MySQL as a leading database is due not only to its price—after all, other cost-free and open source databases are available—but also its reliability, performance, and features.
The Value of MySQL
Many features contribute to MySQL’s standing as a superb database system. Its speed is one of its most prominent features. In a comparison by eWEEK of several databases—including MySQL, Oracle, MS SQL, IBM DB2, and Sybase ASE—MySQL and Oracle tied for best performance and for greatest scalability (see http://www.mysql.com/it-resources/benchmarks for more details). MySQL is remarkably scalable, and is able to handle tens of thousands of tables and billions of rows of data. Plus, it manages small amounts of data quickly and smoothly.
The storage engine, which manages queries ...
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