[plum] Table relationship (or putting stuff where it belongs)

[Nall Daniel A GS-09 336 TRSS/TSUD]

Title: Integrating security

My site has several forms for users to fill out. The main table (Students) has studentID as its primary key and UserID (PlumUser table) as its foreign key.  How do I ensure that the Students form gets the correct UserID inserted and the following forms (which have studentID as their foreign keys) get the correct studentID inserted?  Users (students) must be logged in to fill out these forms.   Respectfully, Dan Nall