情境
A tricycle association needs to manage drivers, their registered tricycles, defined routes, and schedule daily assignments of drivers to tricycles on specific routes.
這張圖裡有什麼
看懂背後的決策。
01
Each driver and tricycle must be associated with one association.
02
Assignments link drivers, tricycles, and routes for a given date and shift.
03
Associations can exist without drivers or tricycles initially.
When designing a database for small-scale public transport management with fixed routes and driver-vehicle assignments.