This sample database was copied from the Chinook project
(http://chinookdatabase.codeplex.com/)

Chinook is a sample database available for SQL Server, Oracle, MySQL,
etc. It can be created by running a single SQL script. Chinook
database is an alternative to the Northwind database, being ideal for
demos and testing ORM tools targeting single and multiple database
servers.

License: http://www.codeplex.com/ChinookDatabase/license

Data Model : http://chinookdatabase.codeplex.com/wikipage?title=Chinook_Schema&referringTitle=Documentation