Chinook: Sample database for SQL Server, Oracle, MySQL, PostgreSQL, etc (2017)
Chinook is a sample database available for SQL Server, Oracle, MySQL, etc. These batch files use the database server command tool (mysql.exe for MySQL, sqlcmd.exe for SQL Server, sqlplus.exe for Oracle, and sqlite3.exe for SQLite). For embedded databases, SQLite and SQL Server Compact, it is also provided the embedded database files in addition to the SQL script files.
Source: github.com