ERD crows foot template.
This ERD crows foot template models the core data behind customer orders. It uses crow's-foot relationships to show that a customer can place orders, each order contains lines, and products can appear on many lines. The sample attributes include primary keys, foreign keys, and useful unique identifiers that you can adapt to a real schema. It gives developers a shared data vocabulary.
Open it in the AI editor with a prompt pre-filled — keep what works, change what doesn't.
Scenario
A product team uses this template to sketch the relational model behind a basic ordering system. Replace the entities and attributes with the terms, keys, and constraints used by the application.
Key decisions
- Order Line resolves the many-to-many relationship between orders and products.
- Foreign keys make the ownership of orders and lines explicit.
- Crow's-foot symbols show whether related records are optional or repeatable.
- Unique email and SKU fields demonstrate common alternate-key constraints.
When to reuse this
Use it to plan a relational database where entities, attributes, and cardinalities matter. Use a UML class diagram when behavior and application objects are more important than database constraints.
Frequently asked questions
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