Information needed : to time frame of two persons using the site at the same time.
We must register "review" acces to an exercice where a student want's to see is response to an exercice.
We want to find who was using the site at the same time as a given student.
We want to find a pair of student that are often together on the same cours on the site (out side of normal teaching hours).
Information needed : to time frame of two persons using the site at the same time. We must register "review" acces to an exercice where a student want's to see is response to an exercice.
We want to find who was using the site at the same time as a given student.
We want to find a pair of student that are often together on the same cours on the site (out side of normal teaching hours).