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Main Pages
- Home Free online MySQL and PostgreSQL schema designer — visual drag-and-drop interface with SQL export.
- Features Full list of everything SQL Designer can do: canvas editing, SQL export, foreign keys, constraints, and more.
- Schema Library Real database schemas shared by the community — browse for inspiration or share your own.
- Try Demo Try the schema designer without creating an account.
- Register Create a free account to save and manage your diagrams.
- Log In Sign in to your SQL Designer account.
Blog
- Blog Index All articles on database design, SQL, and schema best practices.
- Free Online Database Designer Visual schema builder for MySQL and PostgreSQL — design databases without writing DDL.
- Free ERD Tool Online Visual entity relationship diagram editor — draw ER diagrams and export SQL for free.
- Free PostgreSQL DB Designer Online Visual ERD tool for Postgres — design PostgreSQL schemas and export DDL in the browser.
- Free MySQL DB Designer Online Design MySQL databases visually with drag-and-drop tables, foreign keys, and SQL export.
- How to Design a MySQL Database Schema Step-by-step guide covering entities, data types, primary keys, foreign keys, and normalization.
- Free ER Diagram Tool Online for MySQL What ER diagrams are, why they matter, and how to create one in the browser for free.
- MySQL Workbench Alternative Online The best free browser-based alternatives to MySQL Workbench — no download required.
- MySQL Foreign Key — Syntax, Examples, and Best Practices Complete guide to MySQL foreign keys: syntax, ON DELETE/UPDATE options, and common mistakes.
- MySQL Data Types Explained Practical guide to numeric, string, date/time, and JSON types — and which to choose.
- Database Normalization Explained — 1NF, 2NF, and 3NF Learn normalization with clear examples and understand when it's acceptable to denormalize.
- How to Draw an ER Diagram Step by Step Entities, attributes, relationships, cardinality notation, and practical tips.
- MySQL vs PostgreSQL — Key Differences for Schema Design Comparing data types, constraints, JSON support, and which database to choose for your project.