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Database Schema Visualizer

Visualize database schemas with interactive ERD diagrams, analyze table relationships, detect normalization issues, and generate performance and security recommendations.

Database Schema

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The visualizer will parse the schema, build an ERD, and surface performance, security, and normalization insights.

CREATE TABLE users (
  id INT AUTO_INCREMENT PRIMARY KEY,
  username VARCHAR(50) UNIQUE NOT NULL,
  email VARCHAR(100) UNIQUE NOT NULL,
  password_hash VARCHAR(255) NOT NULL,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  INDEX idx_username (username),
  INDEX idx_email (email)
);

CREATE TABLE profiles (
  id INT AUTO_INCREMENT PRIMARY KEY,
  user_id INT NOT NULL,
  first_name VARCHAR(50),
  last_name VARCHAR(50),
  bio TEXT,
  avatar_url VARCHAR(255),
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
);

CREATE TABLE posts (
  id INT AUTO_INCREMENT PRIMARY KEY,
  user_id INT NOT NULL,
  title VARCHAR(200) NOT NULL,
  content TEXT,
  published BOOLEAN DEFAULT FALSE,
  published_at TIMESTAMP NULL,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
  INDEX idx_user_published (user_id, published),
  INDEX idx_published_at (published_at)
);

Quick Tips

Supports SQL DDL, JSON, YAML, Prisma, and Sequelize schema definitions.
Toggle diagram options to focus on structure, constraints, or relationships.
Switch to JSON or text output for programmatic analysis or documentation.

Schema Visualization

Output will appear here

Format: Mermaid ER diagram

How It Works

Input Your Data

Paste, type, or upload your data directly into the database schema visualizer. All processing happens locally in your browser for complete privacy and security.

Configure Options

Customize the tool settings to match your specific needs. Real-time processing with instant validation and error detection.

Process Instantly

Click the process button or enable auto-processing for real-time results. Lightning-fast performance with immediate feedback and validation.

Export Results

Copy results to clipboard, download as files, or share with others. Multiple export formats available for maximum compatibility.

Frequently Asked Questions

What input formats are supported?

Supports SQL DDL statements, JSON schema definitions, YAML configurations, Prisma schema files, and Sequelize model definitions.

What diagram formats can be generated?

Generates Mermaid ERD diagrams, PlantUML diagrams, Graphviz DOT notation, and structured text output. All formats support relationships and constraints.

What analysis features are included?

Provides normalization analysis, performance optimization suggestions, security vulnerability detection, and schema statistics for comprehensive database review.

Can it detect database design issues?

Yes, identifies missing indexes, normalization violations, security vulnerabilities, and provides optimization recommendations with implementation guidance.

Is it suitable for large database schemas?

Designed to handle complex schemas with multiple tables, relationships, and constraints. Provides grouping and filtering options for better visualization of large schemas.

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