How to use sqldrivers with iOS?

Hi all,

I am currently struggling with our application to get it running on iOS.
After some days of research I finally get the application started within the iOS-Simulator. :D

One last step which is finally missing is the database which fails to open.
In fact, there is no sql driver found on startup. I guess the sqldrivers folder is missing. Well... I would guess its missing if I were dealing with Windows/xOS.
As I am completely new to iOS I cannot figure out how to deal with that. Do I need this folder on iOS or is this approach obsolete?

I really appreciate some hints!