Design tables and columns
Add tables and columns, choose data types, set primary keys, and arrange tables on the canvas.
Database modeling in your browser
See your tables and relationships at a glance.
Build tables and columns, connect tables with relationships, and record your design decisions. Relio ERD shows your database structure on a canvas as you work.
Create an ERD
Explore a read-only exampleStart without signing in
One customer can have many orders
Design the model and document your decisions.
Connect tables and add notes
Define relationships, group related tables into sections, and add notes to explain your design decisions.
Export or preview your model
Export your model as a .erd.json file and import it later. Preview the generated DDL and download it as a SQL file.
Save documents in your browser or your account.
Save in this browser without signing in
You can save up to 2 documents in this browser. They do not sync across devices, and clearing browser data may delete them. Back up important models by exporting them as JSON.
Save documents to your account
After signing in, save cloud documents to your account and open them again later. To move a local document to your cloud workspace, export it as JSON and import the file there.
Frequently asked questions
- What is Relio ERD?
- Relio ERD is a browser-based editor for modeling database tables, columns, and relationships visually. Group related tables into sections and add notes to explain your design.
- Where are guest and account documents saved?
- Guest documents are saved in this browser, up to 2, and do not sync across devices. After you sign in, cloud documents are saved to your account.
- Can I edit the examples?
- No. The examples are read-only. Explore their tables and relationships, then create a document in the workspace to build your own model.
- Can I save my model as a file?
- Yes. Export your model as a .erd.json file and import it later. You can also preview the DDL and download it as a SQL file.