Database Schema Visualizer

Transform your SQL DDL statements into beautiful, interactive entity relationship diagrams. Simply paste your CREATE TABLE statements and watch as the tool automatically detects relationships, foreign keys, and table structures. Perfect for database documentation, team collaboration, and understanding complex schemas. Export your diagrams as SVG, PNG, or Markdown documentation.
Quick Examples

Database Schema Visualizer

Transform your SQL DDL statements into beautiful, interactive entity relationship diagrams. Simply paste your CREATE TABLE statements and watch as the tool automatically detects relationships, foreign keys, and table structures. Perfect for database documentation, team collaboration, and understanding complex schemas. Export your diagrams as SVG, PNG, or Markdown documentation.

SQL DDL Input
Supports MySQL, PostgreSQL, SQLite, SQL Server syntax
Display Options
Schema Analysis
0
Tables
0
Relationships
Entity Relationship Diagram
Export Options
Table Details
Click on a table in the diagram to view details
Other Details

Practical Applications & Use Cases

Database Schema Documentation & Visualization

Create visual entity relationship diagrams (ERDs) from SQL CREATE TABLE statements for documentation

  • Paste all CREATE TABLE statements into the tool
  • Verify automatic relationship detection
  • Review foreign key connections between tables
  • Export ERD diagram in SVG or PNG format
Pro Tip: Keep documentation up-to-date. Generate diagrams after every major schema change for accurate team documentation.

Team Collaboration & Schema Communication

Share visual database schemas with team members to improve understanding and collaboration

  • Generate comprehensive ERD from schema definition
  • Export diagram for documentation and presentations
  • Share visual schema with new team members
  • Use diagram during code review and design discussions
Pro Tip: Visual diagrams reduce onboarding time for new developers. They understand relationships faster than reading SQL.

Database Schema Analysis & Design Review

Analyze complex database schemas to identify issues, redundancies, and improvement opportunities

  • Visualize all table relationships and foreign keys
  • Identify circular dependencies and problematic patterns
  • Spot missing indexes or relationship definitions
  • Review schema design for normalization and efficiency
Pro Tip: Look for missing foreign key relationships. Visual gaps in the diagram often indicate missing constraints.

Industry-Specific Applications

software development:

Backend development, database design, schema documentation, team onboarding and knowledge sharing

enterprise databases:

Database management, schema governance, documentation standards, change tracking and review

data engineering:

Data pipeline design, schema planning, ETL documentation, data warehouse architecture

devops infrastructure:

Database deployment documentation, backup planning, disaster recovery planning, migration preparation

education:

Database design teaching, SQL education, data modeling curriculum, student project documentation

consulting:

Client documentation, schema analysis services, database design review, modernization planning

Help & Related Tools

Everything you need to know

FAQ Frequently Asked Questions

What SQL dialects does the visualizer support?
The tool supports MySQL, PostgreSQL, SQLite, and SQL Server CREATE TABLE syntax. It automatically detects foreign key relationships, primary keys, indexes, and data types to generate comprehensive ERD diagrams with full relationship mapping.
How do I create an ERD from my database schema?
Simply paste your CREATE TABLE statements into the input area. The tool automatically parses the SQL, detects relationships, and generates an interactive diagram. You can then drag tables, adjust layouts, and export in multiple formats.
Can I import schemas from existing databases?
Yes! You can paste SQL dumps, DDL exports, or schema definitions from any database tool. The visualizer works entirely in your browser, ensuring your schema data remains private and secure.
What are the limitations for complex schemas?
The tool handles schemas with up to 100 tables efficiently. For optimal performance, we recommend schemas under 50 tables. Very complex relationships may require manual layout adjustments for best visualization.
Can I edit and save my diagram layouts?
Yes! Arrange tables by dragging them to your preferred positions. Export your layout as a JSON file to reload later, or share the configuration with your team for consistent documentation.

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