Database Schema Diagram Tool
Create interactive flowcharts, mind maps, and node diagrams with custom shapes and precise cardinality notation. Free, fast, and runs 100% in your browser.
Database schema design is the foundation of any data-driven application. ZamDev Flow combines ERD notation with a powerful visual editor so you can design schemas with entities, attributes (key, multivalued, derived, composite), and relationships with proper cardinality markers. Describe your database in plain English and let the AI builder generate the initial schema, then refine it with the visual editor. Save to the cloud for collaboration or export for documentation.
Feature Overview
| Feature | Details |
|---|---|
| ERD symbols | Full Chen notation |
| Cardinality | 6 notation types |
| AI scaffolding | ✓ |
| Cloud save | ✓ |
| Privacy | Client-side rendering |
Frequently Asked Questions
Can I show primary and foreign keys?
Yes. Use the underline text decoration for key attributes, following standard ERD convention.
How do I show many-to-many relationships?
Create a diamond-shaped relationship node and connect it to both entities with appropriate cardinality markers.
Can I generate the schema with AI?
Yes. Type a description like 'Student enrolls in Course with attributes Roll_No, Name, DOB' and the AI creates the complete ERD.