Help regarding iScaffold v2.2

[eluser]Unknown[/eluser]
I'm fully new in Codeigniter, started using it since last Tuesday. I've just come to learn about iScaffold v2.2 (iscaffold[.]skyweb[.]hu). And have generated code using that but couldn't understand

> Which database should I use for generated app? The one I used with iScaffold?
> What's about login credential for generated app?

** Sorry for my silly questions, I'm pretty new with frameworks.