Hi, I am currently working on my first app and i'm having some issues 
understanding a few things. My goal is to be able to scan different custom 
qr code containing some kind of address as a short UUID and so retrieve 
some information from a database for each qr code and address. Should i use 
a mysql database or are there other easier options? I also want to allow 
the user to create user accounts and so i thought about using the google 
sign-in method but i wonder if the user info and stats will be easily 
accessible from google so that it can automatically synchronize with the 
information on my database. The qr codes are basically going to contain 
some kind of xp points that should be given to the user scanning it but 
there is also a possibility that the xp amount will change according to how 
many scans it, will this cause a problem if I use both google sign-in and 
store my own information on a private server? Thanks in advance!

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