Chart & Visualization Tools

ERD for Postgres & MySQL

Q: Does this ERD tool support PostgreSQL and MySQL?

Yes. The AI and editor are tuned for PostgreSQL and MySQL naming, PK/FK/UK constraints, and common modeling patterns. You can switch layouts and export clean diagrams for handoff.

Q: How does the AI generate an ERD?

Describe your domain or paste basic CREATE TABLE snippets. The AI proposes entities, attributes, keys, and relationships with cardinalities. You can accept, edit, or add more detail before exporting.

Q: Can I control identifying vs non‑identifying relationships?

Yes. Choose the relationship type in the editor so parent‑child ownership is clear in the diagram and downstream schema work.

Q: What cardinalities can I set?

You can set exactly one, zero or one, one or more, and zero or more. Each relationship shows labels so constraints are unambiguous for reviewers.

Q: Is there an online ERD editor without signup?

You can start free in the browser, create ERDs, and export images. Sign in later to save, share links, and embed diagrams.

Create professional Entity Relationship Diagrams for PostgreSQL and MySQL. AI identifies tables, attributes, PK/FK keys, and cardinalities, then arranges a clear layout you can edit and export.

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Features

Why use this ERD tool

AI speed with database‑ready clarity for PostgreSQL and MySQL.

AI entity discovery

Describe your domain and get draft tables with sensible snake_case names and relationships.

PK/FK validation

Highlight primary, foreign, and unique keys so constraints are explicit and reliable.

Clear cardinalities

Set exactly one, zero or one, one or more, or zero or more with readable labels.

Identifying control

Mark relationships as identifying or non‑identifying to reflect real ownership in the model.

Readable layout

Choose left‑to‑right or top‑to‑bottom, adjust font size, and keep diagrams uncluttered.

Interactive preview

Zoom, pan, and inspect attributes without losing context, then export or embed instantly.

Data input

Bring your schema

✍️

Type entities

Enter tables and attributes by hand for quick sketches.

📋

Paste spreadsheet

Paste columns from Sheets or Excel to define attributes fast.

📄

Import SQL

Drop basic CREATE TABLE snippets to seed entities and keys.

🤖

Describe with AI

Explain your domain and let AI draft entities and relationships.

Export and share

🖼️

Download images

Export crisp PNG or SVG ERDs for docs and slides.

🔗

Share a link

Send a view link to teammates for quick reviews.

🌐

Embed on site

Copy an embed to add your ERD to wikis and portals.

👥

Collaborate fast

Gather feedback without version chaos or email chains.

About this ERD tool

This AI‑powered ERD generator helps you design PostgreSQL and MySQL schemas fast. It drafts entities, PK/FK, and cardinalities from descriptions. Edit in a clean canvas, preview instantly, and export. Ideal for teams that need clarity without complexity.

<2 minSetup time

PostgreSQL, MySQLSupported DBs

InstantAuto layout

PNG, SVG, EmbedExports

EnabledZoom & pan

Workflow

Build your ERD in minutes

Start with AI

Describe your app or paste simple table definitions. AI drafts entities, attributes, and first‑pass relationships.

Define entities

Add or edit tables, attributes, and mark PK/FK/UK in the Entities panel.

Set relationships

Choose source/target, cardinality, and identifying type in the Relationships panel.

Tidy & export

Pick layout direction, tweak font size, preview, then download PNG/SVG or embed.

Use cases

Who this is for

SaaS & Apps

Design normalized schemas

Map users, subscriptions, and billing with precise PK/FK and cardinality for PostgreSQL or MySQL.

E‑commerce

Model catalog and orders

Lay out products, carts, orders, and inventory with identifying relationships for fulfillment flows.

Analytics & BI

Stage and marts planning

Sketch source tables, staging, and star schemas before implementing ETL.

Education & Training

Teach database design

Show classic ER patterns and constraints with a clean, readable layout.

Templates

Start with professionally designed templates

E-commerce Order Management ERD Templateerd

Visualize your E-commerce Order Management ER Diagram fast. See entities, keys, and flows from cart to delivery—share, embed, and refine in minutes.

Online Store Products & Inventory ERD Templateerd

Design a clean Online Store Products and Inventory ERD fast. Map products, stock, orders, and suppliers to prevent stockouts and speed decisions.

Shopping Cart & Checkout ERD Template for E‑commerceerd

Build a clear Shopping Cart and Checkout Entity Relationship Diagram in minutes—align teams, reduce defects, and ship a scalable data model.

SaaS User-Team-Subscription erd Template for Clean Data Modelserd

Visualize a User, Team, and Subscription SaaS ER Diagram in minutes. Map ownership, memberships, and billing with a clean, customizable model.

Multi-Tenant SaaS Database ERD Templateerd

Design a secure, scalable SaaS schema in minutes. Map tenants, users, roles, and billing with this Multi-Tenant SaaS Database ERD Template.

CRM Contacts–Leads–Deals ERD: a clear, scalable modelerd

Design a clean CRM Contacts, Leads, and Deals ER Diagram in minutes. Clarify relationships, prevent duplicates, and speed up implementation.

Related Tools

Create similar charts with these tools

AI ERD Diagram Generatorerd

Build accurate ER diagrams fast with our AI entity relationship diagram generator. Free, online, customizable, and export-ready (PNG/SVG). Create, edit, and share ERDs in minutes—no design skills needed.

AI ERD Makererd

Create accurate schemas fast with our ERD maker for database design. Auto-build entities and relationships, customize layout and labels, then export or share—free online.

AI ERD Diagram Generatorerd

Design clean ER diagrams fast. Our database schema diagram tool uses AI to map entities, PK/FK keys, and cardinality. Free to start, customize layout, and export.

AI ER Diagram Creatorerd

Create accurate ER diagrams fast with AI. The Database ER Diagram Creator builds tables, keys, and relationships. Free, customizable, and easy to export or embed.

Comparison

Why choose AI over manual

Less dragging, more designing.

AI‑assisted ERD builder

Instant draft from a short description or SQL
PK/FK/UK surfaced consistently with clear badges
Explicit cardinality and relationship labeling
Smart auto‑layout that stays tidy as you edit
One‑click export, share links, and embeds

Traditional ERD tools

Manual shape placement and endless alignment
Hard to maintain consistent PK/FK and naming
Cardinality often unclear or mislabeled
Slow to restructure when requirements change
Export and sharing feel like an afterthought

FAQ

ERD FAQs

Does this ERD tool support PostgreSQL and MySQL?

Yes. The AI and editor are tuned for PostgreSQL and MySQL naming, PK/FK/UK constraints, and common modeling patterns. You can switch layouts and export clean diagrams for handoff.

How does the AI generate an ERD?

Describe your domain or paste basic CREATE TABLE snippets. The AI proposes entities, attributes, keys, and relationships with cardinalities. You can accept, edit, or add more detail before exporting.

Can I control identifying vs non‑identifying relationships?

Yes. Choose the relationship type in the editor so parent‑child ownership is clear in the diagram and downstream schema work.

What cardinalities can I set?

You can set exactly one, zero or one, one or more, and zero or more. Each relationship shows labels so constraints are unambiguous for reviewers.

Is there an online ERD editor without signup?

You can start free in the browser, create ERDs, and export images. Sign in later to save, share links, and embed diagrams.

How do I make a PostgreSQL ERD from an existing schema?

Paste key table definitions or describe the schema in plain language. The AI will map entities and PK/FK, and you can refine attributes and constraints in the editor.

Is this a MySQL ERD generator too?

Yes. Use MySQL‑style table and column names, mark keys, and set cardinalities. The output diagram remains database‑agnostic and easy to share.

Can I export or embed my diagram?

Export PNG or SVG for documents, or copy an embed to place the ERD in wikis and dashboards. Links make collaboration simple.

How accurate is the AI?

AI provides a strong starting point. You remain in control to review keys, cardinalities, and labels. Edit anything before you export or share.

Accessible by design

Keyboard navigation for editing and preview
Readable fonts with adjustable size
High‑contrast colors for edges and labels
Zoom and pan for low‑vision access
Clear labels on entities, keys, and relationships

Privacy and control

You decide what to share, download, or keep private
Try the editor without creating an account
Delete diagrams from your workspace anytime
We process your input only to generate the diagram
Exports stay on your device unless you share them

Start now

Design your ERD now

From idea to shareable diagram in minutes—free to start.

AI draft from text or SQL
PK/FK/UK and cardinality controls
Left‑to‑Right or Top‑to‑Bottom layouts
Zoom, pan, and instant preview
Export PNG/SVG or embed links

Works with PostgreSQL and MySQL