AI database diagram generator

Database diagrams with AI.

Describe your database schema and AI generates professional ER diagrams with tables, columns, data types, primary keys, foreign keys, and relationship lines automatically.

Start creating free
A database diagram generated by AI on a MockFlow board
Made simple

Database schema design made simple.

From simple CRUD apps to complex enterprise schemas, describe your data model in plain language and AI generates clear ER diagrams with tables, columns, data types, keys, and relationship lines.

AI generate

Describe your data, get an ER diagram.

Tell AI about your entities, attributes and relationships. It builds a complete database diagram with table structures, column definitions, data types, key indicators and foreign key relationship lines.

"E-commerce database with users, products, orders, order items, and reviews tables"
"Blog platform schema with authors, posts, categories, tags, and comments"
"Hospital management database with patients, doctors, appointments, prescriptions, and departments"
A prompt turned into an ER diagram on the board
Schema details

Tables, columns, keys and relationships.

AI automatically structures each table with proper column definitions including data types, primary key and foreign key indicators, and draws relationship lines between tables showing how your data connects.

  • Table structures. Named tables with columns and data types such as INT, VARCHAR and DATE.
  • Primary keys. PK indicators on identity columns and auto increment fields.
  • Foreign keys. FK indicators with relationship lines to referenced tables.
  • Relationships. One to one, one to many, and many to many with junction tables.
Tables with columns, keys and relationship lines
Edit and customize

Fully editable after generation.

Every AI database diagram is fully editable. Add or remove tables, modify columns, change data types, adjust relationships and rearrange the layout to match your schema. Try another prompt to explore alternative data models.

  • Edit columns and types. Rename columns, change data types and add constraints.
  • Rearrange layout. Move tables, adjust spacing and reorganize the schema.
  • Add and remove tables. Insert more entities, columns or relationships as needed.
Editing an AI database diagram on the board
MockFlow boards

Part of your AI whiteboard.

Database diagrams live on your MockFlow board alongside mind maps, documents, flowcharts, and other AI-powered components. Generate schemas, document architecture, and collaborate with your team, all in one place.

  • AI components. Mind maps, documents, charts, tables and more on one canvas.
  • Real time collaboration. Work together with your team on the same whiteboard.
A database diagram next to other components on a MockFlow board
Free unlimited AI

Use your own AI. No limits. No credits.

Connect MockFlow to your Claude or ChatGPT account through MCP or GPT Actions. Your API, your usage: generate unlimited database diagrams without worrying about credits or restrictions.

MCP for Claude

Generate database diagrams directly from Claude Desktop using our Model Context Protocol server.

Set up MCP

GPT Actions

Add MockFlow as a GPT Action. Generate database diagrams from any ChatGPT conversation.

Open in ChatGPT
How it works

How AI database diagrams work.

From data model description to visual ER diagram in three steps.

Step 1

Describe your schema

Type your entities, attributes and relationships. AI understands database terminology, SQL concepts and data modelling patterns.

Step 2

AI creates the diagram

AI builds table structures with columns, data types and PK and FK indicators, and draws relationship lines showing how tables connect.

Step 3

Refine and export

Edit tables, adjust columns or try another prompt. Export as PNG or SVG for documentation and design reviews.

Use cases

Database diagrams for every project.

From startup MVPs to enterprise systems, AI designs the right schema.

E-commerce platforms

Design schemas for products, users, orders, payments, reviews and inventory with proper relationships.

SaaS applications

Model multi tenant architectures with organizations, users, subscriptions, permissions and audit logs.

Content management

Create schemas for articles, authors, categories, tags, media assets and user generated content.

Healthcare systems

Design patient records, appointments, prescriptions, lab results and billing with HIPAA aware structures.

Education and LMS

Model courses, students, enrollments, assignments, grades and learning progress.

Interview preparation

Quickly sketch database schemas for system design interviews, whiteboard sessions and technical discussions.

Prompts

Try these AI database prompts.

Try these prompts to create database diagrams instantly.

"E-commerce database with users, products, categories, orders, order_items, and reviews tables"

"Social media database schema with users, posts, comments, likes, followers, and messages"

"Library management system with books, authors, members, loans, reservations, and fines"

"Project management database with projects, tasks, users, teams, sprints, and time_entries"

"Restaurant ordering system with restaurants, menus, items, customers, orders, and deliveries"

"HR management database with employees, departments, positions, salaries, leaves, and performance_reviews"

Questions

Frequently asked questions.

What is a database diagram?
A database diagram, also called an ER diagram, shows database tables, their columns with data types, primary and foreign keys, and the relationships between tables. It helps developers and architects understand and communicate data structures.
Does AI include proper data types?
Yes! AI assigns appropriate SQL data types (INT, VARCHAR, TEXT, DATE, BOOLEAN, DECIMAL, etc.) to each column based on the entity and attribute context you describe.
Can it show primary and foreign keys?
Yes. AI marks primary key columns with PK indicators and foreign key columns with FK indicators, and draws relationship lines between the referencing and referenced tables.
Does it handle many to many relationships?
Yes! When AI detects a many-to-many relationship, it automatically creates junction tables (e.g., post_tags, user_roles) with the appropriate foreign keys to both parent tables.
Can I use these for database documentation?
Yes. Export the diagrams as high resolution PNG or SVG for technical documentation, architecture decision records, onboarding guides and design reviews.
Is the AI database diagram generator free?
MockFlow includes AI credits with all plans. For unlimited usage, connect your own Claude (via MCP) or ChatGPT (via GPT Actions) API, then you can generate database diagrams with no limits at all.
Get started

Design your database with AI.

Describe your data model and get a professional ER diagram in seconds.

Create a free database diagramAll diagram types
AI credits on every planFree to start
Try it now

Tell Mida about your tables and relationships and it starts the board for you.