E-commerce domain model class diagram template

Classes in this class diagram

• Customer — 4 members
• Cart — 3 members
• Order — 5 members
• LineItem — 3 members
• Product — 4 members
• Payment — 4 members
• Shipment — 3 members

How to use this class diagram template

1. Click Open in the editor. The class diagram opens on a new page in FlowDiagram — nothing is uploaded and there is no sign-up.
2. Rename, add or delete shapes and drag them where you want; connectors stay attached as things move.
3. Drop in vendor logos from the library — 1,160 of them, including every AWS, Azure and Google Cloud service icon — or restyle it with the colour and theme controls.
4. Prefer text? Edit the Mermaid source below and paste it in through ☰ → Import diagram (see the Mermaid editor); it imports as an editable diagram.
5. Export to PNG, SVG or PDF, or press Ctrl+L for a link that carries the whole diagram.

Mermaid source

The whole template is the text below. Paste it into FlowDiagram, keep it in Git next to the code it describes, or hand it to an AI assistant to extend.

classDiagram
  class Customer {
    +String id
    +String email
    +String name
    +placeOrder(Cart cart) Order
  }
  class Cart {
    +String id
    +addItem(Product p, int qty) void
    +total() Money
  }
  class Order {
    +String id
    +Date placedAt
    +OrderStatus status
    +cancel() void
    +total() Money
  }
  class LineItem {
    +int quantity
    +Money unitPrice
    +subtotal() Money
  }
  class Product {
    +String sku
    +String title
    +Money price
    +int stock
  }
  class Payment {
    +String id
    +Money amount
    +String method
    +capture() bool
  }
  class Shipment {
    +String trackingNo
    +String carrier
    +Date shippedAt
  }
  Customer "1" --> "0..1" Cart : owns
  Customer "1" --> "*" Order : places
  Order *-- LineItem
  LineItem "*" --> "1" Product : refers to
  Order "1" --> "1..*" Payment : paid by
  Order "1" --> "0..*" Shipment : ships in

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