1.)what data type should I used in that two columns ? the integer or the boolean ? 
use integer
2.)After I set the value of the checkbox to "1" for professor and student ... Is the name ofthe checkboxes of the professor and student are the same ?
no, use unique names for the checkboxes
3.)do I have to include in the name of the checkbox this bracket " [] " after the name ofthe checkboxes ?
No, you would only need to do that if the chackboxes are namedthe same, but they should have unique names
4.)In the server behavior panel, the Insert Record(tbl_blah_blah), I will set the value of thecolumn prof and column students .. that get the value from the checkbox that has been
"checked ". Right ?
yes, by binding the columns to the checkbox form element, it will insert the checked value "1" if the checkbox is checked, or leave it blank if the checkbox is not checked.
