Connecting two forms to one database collection is possible.
Here's what I've done:
I built two pages.
1.) One page that contains a form that job seekers can submit
2.) One page that contains a form that allow recruiters to deliver job seekers to us
How was it done?
Easy - Just create two forms. you can choose which fields actually need to be collected (as long as the required fields for both collections is are in the database collection.
As a result, information from both forms will end up in the same collection, yet appear to be a completely separate portal :)
FORM #1 (assigned to one database)
FORM #2 assigned to one database)
Hope this helps someone :)