Rating: 

Null Dates: It would be nice if the discussion on Handling Null Values had also discussed null date values.

Performance: I found that this book's outlook on the use of PreparedStatement objects and CallableStatement objects, as they relate to performance, is directly opposite of opinions found in the book "Expert One-On-One Oracle", by Tom Kyte. It seems that this book performs performance tests in a Single User environment, whereas Tom Kyte's book performs test in a Multi-User environment.