Can Gravity Forms be integrated with a database?

First of all, I’m a noob here and I appreciate all you who dwarf me in WP knowledge (no doubt that’s probably all of you).

I’m looking to create a 5-question questionnaire and it seems to be an easy thing to do in Gravity Forms. However, I have a LOT of variables for the user to choose from, therefore, need to tie the forms to a database containing these variables.

The variables will be selected via drop-downs or check boxes, and then values for each weighted with radio buttons (e.g. determining the user’s level of expertise: rookie, average, guru).

Is this do-able in Gravity Forms?

Thanks in advance!
Bob