About the Authors Arup Nanda, Oracle ACE Director, Oak Table Network member, and winner of Oracle’s DBA of the Year award in 2003 and Enterprise Architect of the Year in 2012, has been an Oracle DBA and developer for 22 years and counting. He is the principal global database architect of a New York–area multinational company. He has coauthored six books, written more than 500 published articles, presented more than 300 sessions, and taught multi-day-long seminars in over 20 countries. He is an editor of SELECT Journal, the International Oracle User Group publication, and is a member of the board of directors of Exadata SIG. Twitter: @ArupNanda Blog: arup.blogspot.com Email: [email protected] Brendan Tierney, Oracle ACE Director, is an independent consultant (Oralytics) and lectures on data science, databases, and Big Data in the Dublin Institute of Technology/Dublin Technological University. He has 24+ years of experience working in the areas of data mining, data science, Big Data, and data warehousing. Brendan is a recognized data science and Big Data expert and has worked on projects in Ireland, the UK, Belgium, Holland, Norway, Spain, Canada, and the U.S. Brendan is active in the Oracle User Group community, where he is one of the leaders for the OUG in Ireland. Brendan is the editor of the UKOUG Oracle Scene magazine, a regular speaker at conferences around the world, and an active blogger, and he also writes articles for OTN, Oracle Scene, IOUG SELECT Journal, ODTUG Technical Journal, and ToadWorld. He is also on the board of directors for DAMA in Ireland. Brendan has published two other books with Oracle Press (Predictive Analytics Using Oracle Data Miner and Oracle R Enterprise: Harnessing the Power of R in Oracle Database). These books are available online. Twitter: @brendantierney Web and Blog: www.oralytics.com Email: [email protected] Heli Helskyaho, Oracle ACE Director, is the CEO of Miracle Finland Oy and an ambassador for EOUC (EMEA Oracle Users Group Community). Heli holds a master’s degree in computer science from Helsinki University and she specializes in databases. At the moment she is working on her doctoral studies on Big Data, schema discovery, and semi-structured data. She has been working in IT since 1990 and with Oracle products since 1993. She has been in several positions, but every role has always included database design. Heli believes that good database design and good documentation reduce performance problems and make solving them easier. Heli is also an Oracle ACE Director and a frequent speaker at many conferences. She is the author of Oracle SQL Developer Data Modeler for Database Design Mastery (Oracle Press, 2015) and one of the first winners of Oracle Database Developer Choice Award (Devvy) in the Database Design category in 2015. Twitter: @helifromfinland Blog: helifromfinland.wordpress.com Email: [email protected] Martin Widlake, Oracle ACE Director and OakTable Network member, has been working with Oracle technology since 1992 when he started as a Forms 3 and CASE developer, so he has been using PL/SQL for 24+ years. Martin has been a development DBA for the last two decades, mostly working on VLDBs and the latest versions of Oracle. He was named Oracle Beta Tester of the year in 2003. For the last eight years he has been an independent consultant (ORA600, Ltd.) specializing in database design, performance, and PL/SQL development. Martin has been a regular presenter at conferences and user groups since 2002, both at home (the UK) and internationally, and also writes articles for magazines. He is a strong advocate of user groups and is an active member of the UKOUG, chairing Special Interest Groups and helping organize the annual technical conference for the last few years. He is also deputy editor of Oracle Scene magazine. Martin maintains a blog that is both technical and also includes his popular “Friday Philosophies”—light-hearted articles about IT management and the odder aspects of our working lives. Twitter: @MDWidlake Blog: mwidlake.wordpress.com Email: [email protected] Alex Nuijten, Oracle ACE Director, is an independent consultant (allAPEX), specializing in Oracle database development with PL/SQL and Oracle Application Express (APEX). Besides his consultancy work, he conducts training classes, mainly in APEX, SQL, and PL/SQL. Alex has been a speaker at numerous international conferences, such as ODTUG, Oracle Open World, UKOUG, IOUG, OUGF, BGOUG, OGH APEX World, and OBUG. For his presentations, Alex received several Best Speaker awards. He has written many articles in Oracle-related magazines, and at regular intervals he writes about Oracle Application Express and Oracle database development on his blog “Notes on Oracle” (nuijten.blogspot.com). Alex is coauthor of the book Oracle APEX Best Practices (published by Packt Publishers). Twitter: @alexnuijten Blog: nuijten.blogspot.nl Email: [email protected] About the Technical Editor Chet Justice, Oracle ACE Director, has been an Oracle professional since 2002. He began by being given SQL*Plus and a tnsnames file, and he quickly connected Microsoft Access to it so he could see the tables. He began working extensively with PL/SQL and testing that PL/SQL with SQLUnit. He learned some database administration skills along the way while setting up testing environments. Then he found and fell in love with APEX. Since he lacks any serious focus, he took a job in a data warehousing environment writing ETL in PL/SQL—then back to OLTP systems, more PL/SQL, and modeling data, before finally finding fulfillment in the chaos of consultancy. He is currently working in the OBIEE realm. Copyright © 2017 by McGraw-Hill Education (Publisher). All rights reserved. Printed in the United States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of the publisher, with the exception that the program listings may be entered, stored, and executed in a computer system, but they may not be reproduced for publication. 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Contents at a Glance PART I The Importance of SQL, PL/SQL, and a Good Data Model 1 SQL and PL/SQL 2 Expert Data Modeling and Implementing Business Logic PART II Underutilized Advanced SQL Functionality 3 Handling Advanced and Complex Data Sets 4 Regular Expressions 5 Edition-Based Redefinition PART III Essential Everyday Advanced PL/SQL 6 Running PL/SQL from SQL 7 Instrumenting and Profiling PL/SQL 8 Dynamic SQL 9 PL/SQL for Automation and Administration PART IV Advanced Analytics 10 In-Database Data Mining Using Oracle Data Mining 11 Oracle R Enterprise 12 Predictive Queries in Oracle 12c PART V Database Security 13 Redaction and Masking 14 Encryption and Hashing 15 SQL Injection and Code Security 16 Fine Grained Access Control and Application Contexts Index Contents Foreword Preface Acknowledgments Introduction PART I The Importance of SQL, PL/SQL, and a Good Data Model 1 SQL and PL/SQL Introduction to SQL and PL/SQL SQL PL/SQL Summary 2 Expert Data Modeling and Implementing Business Logic Implementing Business Logic Business Logic in Database Objects Business Logic in the Code Designing a Database and Data Models