Sure, something like that. For example, a multiple database scenario that allows people to enter a few fields of data, store to the database, then have another control that allows people to query the database of what others have submitted.
I am totally new to DNN, and after reviewing the 'core' modules, I don't see anything like the basic data controls in asp.net when working with Visual Studio.
The only work around I thought of in my limited (still measured in weeks) experience is to create an account creation-type page, change the forms to the data I am interested in obtaining, then save to another database table...still haven't figured out how to query these data, except perhaps the user defined table module...but not sure how to pull all this off.
For example, say we have a portal relating to book reviews. I have a page that list 4-5 different fields a user can complete...a drop-down, a few radio-buttons, title of the book, ISBN number, a true-false "Would you Recommend?" type of form. I would be nice to learn how to save these data in a separate SQL database, then create a simply page that let's user search and sort and query the data.
Does any of this make sense? Another example could be cars: users enter the price of the car, the make, model number, and give it a 1-5 star rating. Once these data records are stored, then allow people to search by make and/or model number, et al.