Instruct: Classify the given review into positive or negative sentiment.
Query: A Clear and Concise Intro and Reference

I wanted a book that would help me start coding PL/SQL within a day or so. I wanted a book that had lots of concise and consistent PL/SQL code snippets. This book sure fills the bill. This book (combined with the Feuerstein books) has me running full speed with PL/SQL.