Chinook: Sample database for SQL Server, Oracle, MySQL, PostgreSQL, etc (2017)
github.com
github.com
https://github.com/lerocha/chinook-database/blob/master/Chin...
If the license isn't useful, it doesn't matter too much how it is organized and which data it contains.
BTW, it is very useful in classes.
It appears to be the MIT license, though I didn't do a full diff to make sure: https://opensource.org/licenses/MIT