MySQL: Designing User Interfaces starts by introducing the functionality of GTK+ and how to migrate from Microsoft's Visual Basic. It then introduces MySQL as a simple, fast, reliable database for corporate applications.
The book then flows into the how-to of combining GTK+ and MySQL through the coverage of the C API for MySQL because it is the "backend" to a GTK+ application. It then expands its coverage and teaches about heterogeneous network and deployment issues, as well as migration from existing systems to MySQL.