This book provides a comprehensive guide to the advanced features of PL/SQL, Oracle's procedural extension for SQL. It is especially designed for developers looking to master complex concepts, optimize code, and prepare for the Oracle 11g Advanced PL/SQL Professional certification (1Z0-146). Through clear explanations, practical examples, and exercises, you will advance your skills effectively. What this Book will help me do Master the use of advanced PL/SQL interface methods for robust database interactions. Implement Virtual Private Database settings with Fine Grained Access Control. Effectively use collections and data caching techniques to optimize your programs. Apply techniques to protect PL/SQL code from various security vulnerabilities, including injections. Implement result caching strategies and learn performance tuning methods to enhance application efficiency. Author(s) Saurabh K. Gupta is an experienced database professional specializing in Oracle technologies, with a focus on advanced PL/SQL development and optimization. He brings years of hands-on expertise to his writing, making complex subjects accessible for developers. In this book, he combines practical knowledge with certification-focused insights to guide readers towards programming excellence. Who is it for? This book is designed for PL/SQL programmers who have intermediate experience and are aiming to elevate their skills to a professional level. If you are preparing for the Oracle 1Z0-146 Professional certification or wish to deepen your understanding of advanced PL/SQL topics, this guide is ideal for you. A foundational knowledge of PL/SQL programming is assumed to fully benefit from the content.