Any developer coding in any computer language must know SQL (Structured Query Language). SQL is used to manipulate data in a relational database. In my tutorial I provide more than a hundred examples of SQL queries for MySQL, Oracle and MS Access databases. The book includes CREATE TABLE statements and INSERT statements with the same data as I am using in the book. You will be able to recreate all required tables on your PC to practice SQL with my tutorial. Or you may use my web page. This book includes homework with 40 questions and answers.