Hello Alexis,
In order to enable REST interface on the server, you should assign the value to "Port REST" property of Valentina connection and restart the server.
Here are examples of how to work with SQLite:
~/Paradigma Software/V4RB_9/Examples/REST
I recommend looking at the following:
- iOS_vSQLite_Fast - open/close connection, execute basic SQL and get results
- iOS_VReport_vSQLite - open/close connection, generate report, show it