is it possible to synchronize ODK with my Postgresql database not only during an upload. Let me explain, we would like to be able to use ODK Collect via a tablet to identify each visitor to our center, but to be able to create a file, which would be available to him each time the visitor returns. He may come 3 times a day. How can I make sure that in ODK Collect I can find out if my visitor has already come during the day or week? The employee needs to find the file quickly
Ubuntu server - PostsgreSQL - ODK Collect Agregate
3. What you have you tried to fix the problem?
External Select but i need more