Software Design

Modeling Parking Lots: Spots and Pricing

UML Class Diagrams · made in Skemio

UML class diagram showing ParkingSpot parent class inherited by EVSpot and CompactSpot, with Ticket and Vehicle associations.

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What it shows

Inherit spot types from a base class to isolate specialized pricing logic.
Decouple vehicle dimensions from spot allocation using spot constraints.
Tickets aggregate spots and vehicles to calculate duration fees cleanly.

The takeaway

Polymorphic spots isolate rate calculations without polluting core parking space logic.

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