Can Atlas generate an ERD from SQL or Prisma?

Yes. Paste SQL DDL or a Prisma schema and Atlas generates the entities and relationships, which you can refine visually.

Does the ERD tool use crow's-foot notation?

Yes. Model one-to-one, one-to-many, and many-to-many relationships with proper crow's-foot cardinality and primary/foreign keys.

Can I export or version the schema?

Yes. Export to PNG, SVG, and PDF, or keep the Mermaid source in your repo alongside migrations.

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For data & backend teams

Design your database schema visually

Backend and data engineers need the schema to be a real design artifact, not boxes on a whiteboard. Atlas Diagram Studio builds proper ER diagrams with crow's-foot notation, generates them from SQL or a Prisma schema, and keeps them next to the docs and project.

Open Diagram Studio All diagram tools

ERD tool
AI diagram generator
UML class diagrams
Mermaid editor

The diagrams you need

Diagram types for this job

Each links to a focused tool - all in one editor, on one data model.

The workflow

How it works, step by step

1
Generate from your schema
Paste SQL DDL or a Prisma schema and Atlas builds the entities and relationships automatically, so documenting an existing database is instant.
2
Model relationships correctly
Set primary and foreign keys and connect tables with crow's-foot cardinality - one-to-one, one-to-many, many-to-many.
3
Design new tables
Describe a new part of the model in plain English and AI drafts the entities and relationships to refine.
4
Review and keep in sync
Review the schema with the team in real time, then keep the diagram next to the migration docs and project.

Outcomes

What you get out of it

Document a database in seconds
Generating the ERD from SQL or a Prisma schema turns hours of manual drawing into a single import.
A schema you can defend
Correct crow's-foot notation and keys make the ERD a real design artifact for reviews and onboarding.
Diagrams next to the code docs
The ERD lives in Atlas alongside the technical docs and project, with version history.

FAQ

Questions, answered.

Can Atlas generate an ERD from SQL or Prisma?: Yes. Paste SQL DDL or a Prisma schema and Atlas generates the entities and relationships, which you can refine visually.
Does the ERD tool use crow's-foot notation?: Yes. Model one-to-one, one-to-many, and many-to-many relationships with proper crow's-foot cardinality and primary/foreign keys.
Can I export or version the schema?: Yes. Export to PNG, SVG, and PDF, or keep the Mermaid source in your repo alongside migrations.

Ready when you are

Database design in one workspace.

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Design your database schema visually

ERD tool

AI diagram generator

UML class diagrams

Mermaid editor

Design your database schema visually

Diagram types for this job

How it works, step by step

Generate from your schema

Model relationships correctly

Design new tables

Review and keep in sync

What you get out of it

Document a database in seconds

A schema you can defend

Diagrams next to the code docs

Explore Diagram Studio

Questions, answered.

Database design in one workspace.

Design your database schema visually

Diagram types for this job

How it works, step by step

Generate from your schema

Model relationships correctly

Design new tables

Review and keep in sync

What you get out of it

Document a database in seconds

A schema you can defend

Diagrams next to the code docs

Explore Diagram Studio

Questions, answered.

Database design in one workspace.