HI!Im a newbie in this forum and in using unity game engine.I would like to know if there are any database required for saving the game.Any ideas on how to save a game?is it programming?or do i have to download something, an application maybe?tnx in advance… 
there is no such requirement
how you handle the saving is fully up to you, cause there is no game save mechanism in place until you have developped one.
the only automatic saving that I know of is EZ Game Saver