Hi,
I have 2 tables: students (where information about sdutends is stored) and marks (which stores marks students get). I want in add mark form user to choose course (stored in students tabe - unique values of course), group (also stored in students - unique values as well) and student. As you see all those fields are dependent. I can make group dependent on course, but student is dependent both on course and group. I want when user selects course and group only students that belong selected group of selected course to be displayed. Is such thing possible?
If there is no shortcut, please can you at least advise which files (php or javascript) should be edited and which functions?