E-commerce Package Diagram

E-commerce package diagram

An e-commerce package diagram gives a high-level view of how an application is organized. Packages represent coherent areas such as the storefront, catalog, checkout, orders and payments. Dependency arrows show which package needs services or data from another one. This level of detail is useful in an architecture review because it exposes coupling without filling the page with every class. Add or remove representative classes as the system boundaries become clearer, but keep the diagram focused on package responsibilities.

種類 UMLクラス図規格 OMG UML 2.5.1 §9–§11エンジン schematex-umlclass更新日 2026/9/24

依頼内容

“Create an e-commerce package diagram with web, catalog, checkout, orders, and payments packages and their dependencies.”

次はこちらAdd an inventory package.Change PaymentGateway to StripeAdapter.

この図に含まれるもの

図の背後にある意思決定を読み解く。

01Group by responsibility

Keep UI, catalog, checkout and payment concerns separate.

02Expose dependencies

Show which package calls another.

03Protect payment integration

Isolate the external gateway behind its package.

04Avoid implementation detail

Keep classes as package representatives.

Use for architecture discussions before drilling into a class or component diagram.

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よくある質問

What belongs in a package diagram?

Major modules, namespaces or layers and the dependencies between them.

Why use representative classes?

They make the responsibility of a package clear without turning the diagram into a full class model.

What does a dashed arrow mean?

It indicates a dependency: one package uses or relies on another.