Im working on a unity facebook game (like this one that uses mochiads http:\www.icebreakersmini.com) and I was wondering where can I find more info about storing user information in a dbase? (scores, ranks, etc) is it safe to use MySQL in the dbase, or should I use oracle or SQL server instead?
In the future Im thinking about using freemium access for microtransactions for the game, so you can buy different looks for your players (although you can also unlock those with user experience or rank) mochigames already does this via mochicoins.
Where can I find more info about this subject? are there unity plugins that already support this?