Where can I find classes for example database world.odb?
Thanks for the answer.
The source code of the relevant entity classes is attached.
The attached program exports data from the World database to the standard output in JSON format.
You will need google-gson in order to run it.
Thanks a lot!
How to save to World database persistent objects that describes the relationships OneToMany and ManyToMany?
I want to see a working example :-)
Persisting objects is explained in this manual page.
Related source code that can be made public has already been published above.