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Object Communication Diagram (OCD). . . . OPerator Class. Customer Class**. . ChkgAcct Class. . ET01:CUfirst. ET03:CUlast. . ET08:CAclose. . . . . ET04:CAdepET09:CAwdwET10:CAchk. . . . . . . . . An OCD shows event communication paths among Active Classes, which have instancesand State Models in
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1. OLC Arch Application: Checking Account Example