Online Database Designer
Create ER diagrams and generate SQL schemas visually
Database Schema
Quick Syntax Guide
ER Diagram
Define tables to see ER diagram
Your database schema will appear here
Database Templates
When to Use Database Designer
Project Planning
Design database schema before starting development to ensure proper data structure and relationships
Documentation
Create visual database documentation for technical specifications and team collaboration
Database Migration
Plan and document schema changes for database migrations and version control
Learning SQL
Practice database design principles and learn SQL table creation syntax
Client Presentation
Share database designs with clients and stakeholders using clear visual diagrams
Schema Refactoring
Redesign existing databases for better normalization and performance optimization
Frequently Asked Questions
What is an online database designer?
An online database designer is a web-based tool that helps you create and visualize database structures. It allows you to define tables, columns, data types, and relationships between tables, then generate SQL scripts for creating the database. It's essential for planning database architecture before implementation.
How do I use this database design tool?
Using our tool is simple: 1) Define your tables and fields using simple text syntax, 2) Specify data types and constraints, 3) Define relationships between tables, 4) See real-time ER diagram preview, 5) Export SQL scripts for your target database (MySQL, PostgreSQL, SQLite, SQL Server). The syntax is intuitive and similar to SQL.
What databases are supported?
Our database designer supports SQL generation for MySQL, PostgreSQL, SQLite, SQL Server, and MariaDB. Each database has slightly different syntax for data types and constraints, and our tool automatically generates the correct SQL for your chosen database system.
Can I export my database design?
Yes! You can export your database design in multiple formats: SQL scripts (CREATE TABLE statements) for various databases, PNG/SVG images of the ER diagram for documentation, and the source text for future editing. All exports maintain your table structures, relationships, and constraints.
What is an ER diagram?
An ER (Entity-Relationship) diagram is a visual representation of database tables and their relationships. It shows entities (tables), attributes (columns), and relationships (foreign keys) between tables. ER diagrams help developers, DBAs, and stakeholders understand database structure at a glance.
Is this database design tool free?
Yes, our online database designer is completely free with no registration required. Design unlimited databases, create ER diagrams, export SQL scripts, and access all features without any costs or limitations. No credit card needed, no watermarks.
What syntax does this tool use?
The tool uses a simple, human-readable syntax similar to dbdiagram.io. Define tables with 'Table tablename { }', add fields with 'fieldname datatype [constraints]', and define relationships with 'Ref: table1.field > table2.field'. The syntax is designed to be intuitive for developers familiar with SQL.
Can I import existing databases?
While direct SQL import is not yet available, you can manually recreate your database structure using our simple syntax. The tool provides templates for common database patterns like e-commerce, blog, and user management systems to help you get started quickly.
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