MySQL developers have used Microsoft source code in version 4.1 of the open-source database, which is due for final release in late October.

When 100-percent open-source companies like Red Hat and MySQL rejig the way they release code (while still releasing it and fully complying with open-source licenses), they get tarred and feathered.

MySQL and PostgreSQL are two popular open-source database products. The addition of stored procedures to MySQL 5.0 is designed to make the database more attractive to corporate customers.

YouTube engineers are developing a set of software, called Vitess, that will help open-source MySQL databases work more efficiently in very large-scale production environments. To write the code ...