SQLite

SQLite is an embedded relational database that stores everything in a single file. It requires no server process and is included in Python's standard library and most operating systems.

Installation

# Install SQLite CLI on Ubuntu/Debian
sudo apt-get install sqlite3

# Install SQLite CLI on macOS (pre-installed, or update via Homebrew)
brew install sqlite

# Install Node.js driver
npm install better-sqlite3

# Python — sqlite3 is built-in, no install needed