1.4.10. Participation

  • Participation constraints
  • Existence of an entity dependant upon
    • being related to another entity
    • via relationship type (left hand/design)
  • Total (")/Existence
    dependency (double line)
    • Every student must be in a faculty
    • For every entity in the total set of students
  • Partial ($) (single line)
    • Some students are student_representatives
    • There exists some entity(s) within the set of all…