AI ER Diagram (ERD) Generator

Turn a database idea into a clean ERD in seconds. Describe your entities and relationships—Dashin drafts tables, keys, and links you can refine.

Free to start Editable diagrams Share & export

How it works

  1. Describe your system (entities, key relationships, constraints).
  2. Dashin generates an ERD with tables, keys, and relationships.
  3. Edit, iterate, and export when it looks right.

Example prompts

"Design an ecommerce database: users, products, orders, order_items, payments. Include statuses and timestamps. Add 1:N and N:M relationships."
"Create a SaaS schema: organizations, members, roles, projects, tasks, comments. Enforce unique emails per org and include audit fields."
"Model a hospital system: patients, doctors, appointments, prescriptions, billing. Specify which fields are nullable and add unique constraints."
"I need a blog schema: authors, posts, tags, post_tags, categories, comments. Add indexing hints for common queries."

What you can generate

  • Tables with columns and types
  • Primary keys and foreign keys
  • 1:1, 1:N, and N:M relationships
  • Core constraints (unique, nullable)

Example ER diagram generated by Dashin

FAQ

Common questions about generating ER diagrams with Dashin.

Basics

What is an ERD (ER diagram)?

An ERD (Entity Relationship Diagram) is a visual model of a database schema. It shows entities (tables), their attributes (columns), and relationships between them.

Keys

Can Dashin generate primary and foreign keys automatically?

Yes. Dashin can generate tables with primary keys and foreign keys based on the relationships you describe, and you can edit them after generation.

Modeling

How do I model many-to-many relationships?

Use a join table (association table) that references both entities with foreign keys. Dashin can generate the join table when you describe an N:M relationship.

Editing

Can I edit the ERD after it’s generated?

Yes. You can iterate by asking for changes (add tables/columns, rename fields, adjust relationships) and refine the diagram until it matches your schema.

Prompting

What should I include in my prompt for the best ERD?

Include your core entities, key relationships (1:1, 1:N, N:M), important constraints (unique, nullable), and any required fields. Mention the domain (e.g., ecommerce, SaaS) for better naming.

Compatibility

Does this work for Postgres / MySQL / Supabase schemas?

Yes. ERD concepts map cleanly to Postgres, MySQL, and Supabase/Postgres. You can adapt types and constraints after generation to match your database.

Sharing

Can I export or share the ERD?

Yes. You can share diagrams via links and export formats depending on your workflow.

Generate your ER diagram now
It takes less than a minute to get a clean first draft.