Instruct: Classify a given review as either positive or negative.
Query: A cure for insomnia

This book is turgid and poorly written. I could not manage to get more than 1/2 way through the text as the concepts are poorly explained and the use of UML is surprisingly bad.To summarise:Poor use of UMLConcepts and ideas badly explained.Difficult to read.A colleague (an oracle DBA) did not even manage to get as far as I did before giving up!