Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Practically useless

80% of this book are flowchart diagrams. 20% of the book are useless tables. There are zero explanations of Oracle or any of the SQL and PL\SQL commands the book professes to explain (only through the flowchart diagrams and tables of course). I would have never bought this book if I had perused through it first. Buyer beware, this book is contains no useful information to the Oracle DBA.