Setting Up SQL Databases

Setting Up SQL Databases — Install and configure MySQL, PostgreSQL, and SQLite — step-by-step guides for each database system. The guide walks through Installing MySQL, Installing PostgreSQL, Using SQLite. Download MySQL from dev.mysql.com. On Windows, use the MySQL Installer. On Linux: sudo apt install mysql-server. After installation, run mysql_secure_installation to set the root password and remove defaults. Use mysql -u root -p to connect. Create your database with CREATE DATABASE mydb;. Download from postgresql.org. On Windows, use the installer. On Linux: sudo apt install postgresql. Connect with: sudo -u postgres psql. Create a database: CREATE DATABASE mydb;. Create a user: CREATE USER myuser WITH PASSWORD 'pass'; GRANT ALL ON DATABASE mydb TO myuser;. The guide is organized into 3 sections that build on each other, each pairing a prose explanation with real SQL you can run as-is. Related guides: SQL Introduction, SELECT Statement, WHERE Clause & Operators, SQL JOINs, GROUP BY & Aggregation.