Once everything is correctly installed, it is time to see GNOME-DB in action. Before doing so, though, there is a last thing you must do, which is to add the directory where you installed GNOME-DB libraries to your LD_LIBRARY_PATH environment variable, and the directory where the binaries are placed to your PATH environment variable.
Then, just run one of the included applications, such as gdafe (the SQL Front-End), gda-mgr (the GDA configurator) or rolodex (a sample rolodex application that shows how you can easily use the GDA API to make your own applications); or have a look at the API documentation and at the included sample code to see how you can integrate GNOME-DB in your applications.