10 UMLClass 300 130 180 100 STUDENT -- snumber ID first-name last-name degree bg=#dddddd UMLClass 660 140 180 80 BOOK -- library ID call-number ID title bg=#dddddd Relation 470 160 210 50 lt=- m1= r1= m2=* Borrows > 10.0;20.0;190.0;20.0