Best Practices:

1.  It's all about recovery.

Worst Practices:

1. The Seven Deadly Habits of a DBA
   1. We have faith in our backup.
   2. It will work the way we expect it to. Let's go ahead.
   3. We don't need to monitor the system. The users always let us know when something's wrong.
   4. We'll remember how this happened, and what we did to get things going again.
   5. Don't look at me, it's the developer's fault that SQL is in production.
   6. I know what I'm doing and don't need any help.
   7. Things would work so much better if only we had...
2. If we type in the prod database 1000 times per day and the test database 3 times per day, we won't accidentally delete a production table.
3. 3 levels of backup are enough.