Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Lite on the subject matter

Having used the previous two study guides in the set for Oracle 9i DBA OCP, I found the third book (this one) to be missing the depth the first two had. I've been using Oracle's online documentation to supplement my study. This book gave me a good overview for starting, but the authors seem to pick a few examples for mostly illustrative purposes, and the questions just didn't do the subject material justice. I expect more from a study guide than just that. Organization could be better too. (Same goes for Oracle's docs.) There are so many convoluted ways to backup/restore/recover that a study guide needs to bring it all together in a concise summary. Of course that's a good exercise left to the student, along with the some hands-on stuff, which I need to get back to. I just wish I had a study guide that made better sense of it all.