Yes, use SQL Express 2014 for the database, install it on a PC or one of the POS. You can find more information here about setting it up:
They can’t “just be touch screen monitors”. Either they can be full PCs or Windows tablets. You can also connect via RDP and use Android tablets or iPad but it is a more advanced setup so I suggest to stick to either PCs / POS Terminals / Windows tablets (which are cheaper than Android a lot of the time these days anyway).
If you just want reports, you can setup rules to send reports by email every day, etc
Or you can connect to one of the systems using RDP / TeamViewer or similar remote access software to get occasional access to reports.