UML

Fleet Maintenance Garage Work Order Class Diagram

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UPDATED 2026-09-23
EXAMPLEFleet Maintenance Garage Work Order Class Diagram
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CASE ANALYSIS

Scenario

A fleet maintenance garage needs to track vehicles, customers, work orders, assigned mechanics, services and parts used, and invoicing.

Key decisions

  • Model WorkOrder as an aggregate root with composition to ServiceItem and PartItem
  • Use interface Billable for items that contribute to invoice total
  • Represent work order status as an enumeration

When to reuse this

When designing a garage management system or service workflow tracking vehicle repairs and billing.

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