By far, the most common RDBMS platforms for Linux-based systems are MySQL and PostgreSQL, due to their inclusion in most major Linux distributions. Quite a few shops still run legacy databases, however, using commercial database servers such as Sybase or Oracle. Even Linux Journal gave its 2001 Editors’ Choice Award for Best Database to Oracle. As such, it is not uncommon for a programmer to be asked to put together an application to interact with these legacy databases.
Link: linuxjournal.com
