Should I use Unity to act as a Master Server for a game or what would be the appropriate approach?

So, just a quick information as to what i am trying to accomplish. I want to use Unity for client end to obviously "play" the game and what not. Now, I was able to get UNET to work with a MasterServer I found on one of the forums and got it working nicely for other things.

Now, let say I want to start using store using information and tying player accounts to their own unique player data. Now, from how I have done things in a HTML style would be using some sort of DB. Now it seems like using Unity to on the Server side perhaps seems a little overkill and would have to deal with getting Mono/.NET DLLs working for using ORM.

So, in short. Should I have Unity Client side simply make request through HTTP/HTTPS or use Unity on the server side for processing information? To being able to access the DB and manipulate and send data back to the client for rendering, input, etc.

Just curious on input and an appropriate response. Then afterwards another problem comes towards scalability.