Where does Android store the default application settings that connects each type of content with a designated application?
I mean which application open each kind of file or content type so if I got two PDF readers and I downloaded a PDF file android will use one of them without letting the user an option to choose.

I know I can clear the default settings of an application but it's not what I'm looking for.

I want to find the table/database/file that android uses for this.
Is it in a sqlite database file? Where is it stored ?