People borrow my database books and a bunch of them are in circulation at any given time. Also, a lot of database resources are online only (e.g. for Oracle and MySQL). Right now, this is the state of my database bookshelf:

l2db
Not bad! You can probably get through a lot with just these three…
Giorgio Sironi
on Mar 10th, 2009
@ 11:42 am:
Half of Mysql Pocket Reference is also online in Google Book Search (in case someone steal your copy :)