Classification of the View Maintenance Problem [3/5]  When insert part(p1, 5000, c15) and supp_parts does not contain p1, join makes it impossible to maintain supp_parts using the materialized view 5 supp(supp_no, part_no, price) supp_parts(part_no) = ∏ part_no (supp part_no part) Language Dimension
{}