Oracle Database 12c Interactive Quick Reference

You may remember days when you had huge Oracle posters on your cubicle wall that listed the various data dictionary views, or the underlying Oracle architecture.  Maybe you still have them.  For the 12c version of the database Oracle provides the Oracle Database 12c: Interactive Quick Reference.
The Quick Reference provides information on:

• DBA Views
• Performance Views
• Architecture Views
• Database Architecture
• Multitenant Architecture
• Background Processes

As part of the Quick Reference there are Architecture .pdfs so if you like having hard copies you can always print them out.

If you're looking for the 11g version you can download it here: 11g Interactive Quick Reference