Contrary to the opinions of most of the other people who have written reviews on this book, I thought it was great. I have been developing applications in C++Builder for about a year or so (and in Delphi for a few years before that), but never had to do anything too complicated with databases. I especially found Part II of the book extremely valueable and easy to understand.
Even though this is a Delphi book it was invaluable to me in completing a C++Builder database application that I was required to write.
In my opinion, if you aren't advanced enough to know how to do database programming in Delphi (or C++Builder), but would like to be, this book is for you. If you are already an accomplished database programmer, then you probably wouldn't look for a book like this in the first place.