10 UMLClass 260 100 170 100 STUDENT -- snumber ID first-name last-name degree bg=#dddddd UMLClass 640 100 170 100 BOOK -- call-number ID ISBN title publisher bg=#dddddd Relation 420 120 240 50 lt=- m1=0..1 r1= m2=* Borrow > 10.0;20.0;220.0;20.0