5.3 Associations and Multiplicity An association is used to show how two classes are related to each other Symbols indicating multiplicity are shown at each end of the association Employee Company Secretary Manager Company BoardofDirectors Office 0.1 Employee Perso 0,3.8 BoardofDirectors www.oseng.com O Lethbridge/Laganiere 2001 Chapter 5: Modelling with classes 8© Lethbridge/Laganière 2001 Chapter 5: Modelling with classes 8 5.3 Associations and Multiplicity An association is used to show how two classes are related to each other • Symbols indicating multiplicity are shown at each end of the association 0,3..8 * Employee * * 1..** 0..1 * Secretary Office Person Company Employee Company Manager BoardOfDirectors BoardOfDirectors