This is the classic [chinook](https://github.com/lerocha/chinook-database) data set, which simulates a simple digital media store; with dozen or so tables, some simple relationships, and (depending on the table) a few dozen to a few hundred rows of realistic data per table. Additionally it has been enriched with some sensible permissions on two new roles: employee, and customer. Selected for inclusion because it's understandable, standard, familiar and somewhat realistic.