Can you provide some more details of your setup? Meaning you have a “backend” where one sits with a Excel wants to read in data. The Dataentry happens on Tablet - are they connected via WLAN/Internet to this “Backend”? Do you want the data “Online”/Immediate or could it sync on some time? Is there only one “Client” doing the Dataentry or do you have several Clients from which the data needs to be sorted out of Duplicates eg or entering data at the same time?
Btw, I think it is not a big deal if you know what you’re doing (as always 
) - maybe it is a option for you to post it detailed in the forum as a paid/unpaid Project and you find someone doing it for you?