That tutorial is exactly what you need because your "local" database is local only to your laptop and not to any other device. And if you want to share that database you would have to provide means to do so like acquiring static IP for your laptop so you could connect to it from anywhere in the world.
peter_budo
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Yes, your best chance is to get some hosting plan so IP would remain same. Then provide a way to access database, PHP/Java/.NET service that accept request and some parameters, runs the query and return results back to device
peter_budo
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