Oracle

Oracle’s website is here

To emulate Oracle use it is possible to register for and download Oracle XE (Express Edition) which can be package-installed, for example, into a VM and networked to appear as a local database. [1]

If you’re downloading Oracle stuff, you’ll probably also need to download the appropriate JDBC driver and more than likely the SQL Developer application to view table structure and content.

Footnotes

[1]	I used Oracle Database Express Edition 11g Release 2 installed in a VirtualBox Fedora 20 for testing purposes - although I did need to increase swap space and tried alter system set processes=200 scope=spfile when in the sqlplus system CLI.