How do I connect to personal DataBase?

Ok here me out,

I want to connect to a personal DataBase of mine for advanced saving properties, and I don't know how to do that, I did some research*(typing up things in google)*, I know you have to use httpservice and maybe web API's but I was wondering if you could do it without Web API's and how but if not How would I connect to the web API and how would I structure the API and things!

Why not integrate the properties into roblox studio and make the properties global variables.