MySQL™: The World’s Most Popular Open Source Database 132 How MySQL Software Develops • Core development – done by salaried employees of MySQL AB worldwide • Assimilation – licensing (InnoDB, Berkeley DB) or acquisiton (JDBC driver) of technology developed in the open source community • Contributions – case-by-case contributions by individuals and companies (where ownership is transferred to MySQL AB) • Community – some add-ons and APIs that remain in community ownership (such as Perl-DBI and PHP-MySQL connection) Copyright 2003 MySQL AB