Are there a good example for mobile game server and database?

Unity Engine
1

So for make game’s own server and database for in-app-item purchase history recording and restoring when user start game,

are there a good solution or example or tutorial to make this server & database?

or 3rd party solution exist about this problem?

Thanks.

2

Take a look at http://parse.com, they have a pretty good Unity plugin and a simple to use dashboard. Plus it’s free up to a 30 requests/second.