This book is written to allow a developer from another platform, familiar with one of the covered languages to quickly come up to speed on the most robust operating system ever created. The same application is redeveloped with each language and tool. If a developer knows C or C++ and needs to learn COBOL, FORTRAN or BASIC they can quickly compare the design and development trade-offs learning the language far more quickly. Both RMS indexed file and relational database development are covered. When working with MySQL, only the C language is covered. The FMS screen handler is covered. This screen handling package may be one of the oldest on the platform, but it has such a massive installed base you will almost certainly encounter it should you choose to do development on this platform. All source code can be found at the Web site for the series: http://theminimumyouneedtoknow.com/