10 UMLClass 10 60 160 90 STUDENT -- s# ID1 first-name last-name dob bg=#dddddd UMLClass 680 70 130 80 SUBJECT -- code ID1 title credits bg=#dddddd UMLClass 350 90 100 50 ENROLMENT -- bg=#dddddd UMLClass 170 90 70 40 code edate bg=#dddddd Relation 230 90 140 50 lt=- m1= r1= m2=0..1 Performs > 10.0;20.0;120.0;20.0 Relation 440 90 190 50 lt=- m1=0..1 m2= < Is-involved-in 10.0;20.0;170.0;20.0 UMLClass 610 90 70 40 s# edate bg=#dddddd