Free during open beta
Build entity relationship diagrams (ERDs) in Raltey
Raltey's database canvas covers ERDs: entities, attributes, primary and foreign keys, and cardinality. Generate from a description, paste DBML or SQL, then refine.
What you can do
Built for entity relationship diagrams that ship.
- Generate an ERD from a one-paragraph product description.
- Paste DBML or SQL DDL to draw the visual ERD.
- Set cardinality and key types directly on the canvas.
- Export to PNG, SVG, PDF, or SQL DDL.
Try these prompts
Type, paste, done.
1.ERD for an e-commerce store with carts, orders, and shipments.
2.Mark which relationships are 1:1 vs 1:N vs N:N.
3.Add an audit-log table referenced by every other entity.
How it works
From prompt to entity relationship diagram in three steps.
- 01
Prompt or paste
Describe the system or paste DBML/SQL.
- 02
Refine on the canvas
Drag, rename, adjust cardinality, or ask the AI to normalize.
- 03
Export
Send to your team, embed in docs, or export DDL.
Who uses it
- Design reviews
- Coding interviews
- Documentation
- Database refactors
Why Raltey for this
- Dedicated ERD canvas that knows about keys and cardinality.
- Round-trip with DBML and SQL.
Frequently asked
Can I paste DBML or SQL?
Yes. Paste DBML or SQL DDL and Raltey draws the matching ERD on the canvas.
Is it free?
Raltey's Free plan includes the AI agent, 5 projects, and 10 AI generations per month. No credit card required.
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Build your first entity relationship diagram in Raltey
Free plan includes the AI agent. No card required.