MockFlow IdeaBoard

Create Database Diagrams
with AI Instantly

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

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← All Diagram Types

Create Database Diagrams with AI Instantly

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 generates a complete database diagram with table structures, column definitions, data types, key indicators, and foreign key relationship lines automatically.

"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"

Schema Details

Tables, Columns, Keys & 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.

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Table Structures Named tables with columns, data types (INT, VARCHAR, DATE, etc.)

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Primary Keys PK indicators on identity columns, auto-increment fields

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Foreign Keys FK indicators with relationship lines to referenced tables

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Relationships One-to-one, one-to-many, many-to-many with junction tables

Edit & Customize

Fully Editable After Generation

Every AI-generated database diagram is fully editable. Add or remove tables, modify columns, change data types, adjust relationships, and rearrange the layout to match your exact schema. Regenerate with a different prompt to explore alternative data models.

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Edit Columns & Types Rename columns, change data types, add constraints

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Rearrange Layout Move tables, adjust spacing, reorganize the schema layout

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Add & Remove Tables Insert additional entities, columns, or relationships as needed

IdeaBoard

Part of Your AI Whiteboard

Database diagrams live on your IdeaBoard whiteboard alongside mind maps, documents, flowcharts, and 20+ other AI-powered components. Generate schemas, document architecture, and collaborate with your team — all in one place.

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20+ AI Components Mind maps, documents, charts, tables, and more on one canvas

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Real-Time Collaboration Work together with your team on the same whiteboard

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.

GPT Actions

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

How AI Database Diagrams Work

From data model description to visual ER diagram in three steps

Describe Your Schema

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

AI Creates the Diagram

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

Refine & Export

Edit tables, adjust columns, or regenerate with a different prompt. Export as PNG, SVG for documentation and design reviews.

AI 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 & LMS

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

Interview Preparation

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

Try These AI Database Prompts

Copy and use 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"

Frequently Asked Questions

What is a database diagram?

A database diagram (also called an ER diagram) visually represents 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?

Absolutely. 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?

The diagrams can be exported as high-resolution PNG or SVG for use in 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.

Ready to Design Your Database with AI?

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

Create Free Database Diagram