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If MySQL is not installed download MySQL 5.1/5.5 binaries or source from http://dev.mysql.com/downloads/. Linux users should install MySQL using a package or binaries if possible. Choose the standard configuration. Windows users should consider installing MySQL as a service. Remember to include MySQL's /bin directory in your PATH statement.
MySQL 5.5: http://dev.mysql.com/downladsdownloads/mysql/5.5.html
MySQL 5.1: http://dev.mysql.com/downloads/mysql/5.1.html
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