ERD examples
Real ERD examples by service type
Concrete ERD examples that show how real service requirements become tables, columns, primary keys, foreign keys, and relationships.
Commerce example
Ecommerce Order ERD Example
A practical ecommerce order ERD example covering customers, orders, order items, products, payments, and shipments.
Reservation example
Reservation Service ERD Example
A reservation service ERD example for resources, available time slots, reservations, payments, and cancellations.
Board example
Board ERD Example
A community board ERD example with boards, posts, comments, attachments, and likes.
Auth example
OAuth Login ERD Example
An OAuth login ERD example for users, OAuth accounts, sessions, email verification, and password resets.
PostgreSQL example
PostgreSQL Table Design Example
A PostgreSQL table design example using uuid keys, timestamptz, jsonb, partial indexes, and foreign keys.
Requirements to ERD
How to Turn Requirements into an ERD
A step-by-step example that turns product requirements into ERD entities, columns, and relationships.
AI draft example
Create an ERD Draft with AI
A practical example of asking AI for an ERD draft and reviewing the tables, keys, relationships, and history model.