Entity Relationship Diagram
An entity relationship diagram models the tables in a database and how they relate to one another through keys. Database designers use it before writing schema migrations to avoid costly structural changes later. Tip: mark cardinality clearly on every relationship line to prevent ambiguity.
The prompt behind this diagram
Create an entity relationship diagram for an online retail database. Include entities Customer, Order, OrderItem, Product, Category, and Payment. Customer has a one-to-many relationship with Order; Order has a one-to-many relationship with OrderItem; Product has a one-to-many relationship with OrderItem and belongs to one Category; Order has a one-to-one relationship with Payment. Show primary keys and foreign keys for each entity along with key attributes like customer_id, order_date, price, and quantity.
Paste your own description (or Terraform / docker-compose / SQL schema) into draft1 and get a diagram like this for your exact system.
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