ER Flow for Prisma ORM Users

Visualize and design your Prisma data model before writing schema.prisma

Prisma schema files are powerful but hard to reason about at scale. ER Flow gives you a visual canvas to plan your entire data model — tables, relations, indexes — so you know exactly what to write in schema.prisma before touching a single line of code. Supports PostgreSQL, MySQL, SQLite, and SQL Server, matching Prisma's database adapters.

Benefits

Visualize complex Prisma relations (one-to-many, many-to-many, self-referential) as a diagram before coding
Design composite indexes and unique constraints visually, then translate them directly to schema.prisma
SQL import reverse-engineers an existing database into a visual diagram when adopting Prisma on a legacy project
Identify missing relation fields and bidirectional links before Prisma's CLI throws errors
Checkpoint-based versioning tracks schema evolution across every Prisma migration cycle
AI integration via MCP Server lets you scaffold entire Prisma-ready schemas by describing features in natural language

How It Works

1

Plan

Open ER Flow and create your models as tables. Define columns, types, and mark primary keys — mirroring Prisma model fields.

2

Relate

Draw foreign key relationships between tables. ER Flow visualizes every one-to-many and many-to-many link.

3

Index

Add composite indexes and unique constraints visually. These map directly to Prisma's @@index and @@unique decorators.

4

Review

Zoom out and inspect the full canvas. Catch missing relations and normalization issues before writing a single line of schema.prisma.

5

Translate

Use the visual diagram as your blueprint. Write schema.prisma with confidence, then run prisma migrate dev.

Visualize your Prisma schema today

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