This book teaches you how to write SQL statements to efficiently retrieve and update the data in an Oracle database. It teaches you how to design and create a database because that provides insight into performance and security issues. It teaches you how to use Oracles procedural language (PL/SQL) to take advantage of powerful features like transactions, stored procedures, functions, and triggers. And it teaches you how to host an Oracle database in the cloud and use SQL Developer to run SQL statements against that database.