Instruct: Classify the given Amazon review as either positive or negative.
Query: Where is the most important chapter?

This books contains 100 pages "how to install"and 200 pages "database structure description" with sql code.Unfortunately it does _not_ contain a 200 pages "how to use it" chapter.Once you have installed the system and you do not want to develop to it a new application, just to use it, you do not need this book.