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How to Design a PostgreSQL Schema Visually (Step-by-Step)

PostgreSQL schema design tutorial. Learn visual database modeling with ER diagrams, create tables, set foreign keys, and generate documentation with a GUI tool.

Postgresql • 12-Aug-2025

SQL Joins Explained - INNER, LEFT, RIGHT, FULL

Understand SQL JOINs with clear examples. Learn how INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN work and when to use each. Beginner-friendly.

Tutorials • 08-Aug-2025

What Are Aggregate Functions in SQL? Learn with Examples

Learn SQL aggregation functions like SUM, COUNT, and AVG with simple examples. Understand how they work and generate them visually in DbSchema.

Tutorials • 07-Aug-2025

What Is a Primary Key in SQL? Learn with Examples

A primary key is a column in a database table that uniquely identifies each row. Each table can have only ONE primary key, and it can’t be left empty.

Tutorials • 06-Aug-2025

Free SQL Tool to Understand Your Database Visually

Learn SQL faster with a free SQL client that shows your database visually in an ER diagram. See tables, relationships, query results, and edit data easily.

Dbschema features • 05-Aug-2025

DbSchema | Create New User in MySQL & Grant Access

The easiest way to create a new user in your MySQL database and grant privileges

Mysql • 03-Aug-2025

How to Generate Database Documentation (HTML5, PDF, Markdown)

Generate interactive database documentation in HTML5, PDF, or Markdown using DbSchema. Add diagrams, comments, and sync everything with Git.

Dbschema features • 01-Aug-2025

What Is a Foreign Key Constraint in SQL?

A foreign key links one table to another by matching values, usually to a primary key. It keeps data accurate and prevents invalid references.

Tutorials • 31-Jul-2025

Visual Database Management & Design Tool for IBM Db2

Discover an ER diagram tool for IBM Db2 that simplifies schema modeling, database management, querying, Git integration, and documentation. Try it free for 30 days.

Databases • 25-Jul-2025

How to Design and Manage Apache Derby Databases Visually

Visual guide for Apache Derby: create diagrams, edit schema, sync changes, generate docs, and explore data. No SQL required. Try DbSchema free.

Databases • 24-Jul-2025