I'm trying to use Collector with ArcGIS 10.3 where my published data (points) are stored simply in a File Geodatabse and the service is a Feature Service enabled for Query, Insert, Delete and Sync. So I can able to work fine from my Android Collector App.
The question is: what about concurrent changes, so concurrent Sync, when multiple users submitt them to the server if there is no SDE enterprise geodatabase? Who wins? What about the contemporaneity?
Thanks in advance!