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UML

Computer Sales and Inventory System Class Diagram

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UPDATED 2026-09-10
TYPEUmlclass
USE-CASEComputer Store Sales Inventory
EXAMPLEComputer Sales and Inventory System Class Diagram
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CASE ANALYSIS

Scenario

A wholesale computer hardware distributor needs a class model that tracks products, suppliers, purchase orders, customers, sales orders, and warehouse inventory.

Key decisions

  • Use composition for order-to-line relationships because line items cannot exist without their parent order.
  • Separate Product catalog entries from InventoryItem physical stock to support serialized hardware tracking.
  • Keep Supplier and Customer as independent aggregate roots linked to their respective purchase and sales orders.

When to reuse this

Use when designing sales and inventory systems for hardware distributors, computer resellers, or electronics wholesalers.

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