Looking to start building an APP with SQL intergration

Description

We are looking to create an electronic Patient Care for app for our ambulance service.
Access permissions to the app would need to be managed (9so the log on to it)
This would be a multipage form which can then be customised for different locations.
The information should then be stored locally for 12 hours before auto erasing (the info should be sent permanently to a secure SQL server which would also require setup.