GMU Geotechnical Inc
Of course it is possible.
The "map" needs to be published to either ArcGIS Enterprise (Server), ArcGIS Online, or Portal for ArcGIS, and then you should be able to do the this edit and query operations against the feature layer.
Make sure that feature layer is edit-enabled when publishing.
For AppStudio for ArcGIS, this edit and query operation will be done using ArcGIS Runtime for Qt (The QML API)
Inside the AppStudio Desktop, we have some samples that you can look at to start with, by going to New App -> Samples, and choose,
- Add & Delete Features - Github link
- Feature Layer - Github link
Let me know if this answers your question or if you have any other questions.
Thanks,
Erwin