def update_comments(self, updates, criteria):
     return update_rows("com", updates, criteria, self._connection)
 def update_submissions(self, updates, criteria):
     return update_rows("su", updates, criteria, self._connection)
 def update_assignments(self, updates, criteria):
     return update_rows("as", updates, criteria, self._connection)
 def update_coursestudents(self, updates, criteria):
     return update_rows("cs", updates, criteria, self._connection)
 def update_students(self, updates, criteria):
     return update_rows("st", updates, criteria, self._connection)
 def update_instructors(self, updates, criteria):
     return update_rows("in", updates, criteria, self._connection)