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 UWA week 39 (2nd semester, week 9) ↓
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10:13am Tue 24th Sep, ANONYMOUS

Hi, Can anyone please advise why it is a 1:* relationship as HireVehicle (1..1) and Invoice (0..*). I would think it should be a 1:1 relationship because a single hired vehicle identified by (regNum, Date) can only be associated with zero or one Invoice. Thanks

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