Example database schemas for different db types

Question

I am looking for some adequately-complex sample database schemas that I could use for examples on my site http://sqlfiddle.com (my current examples are pretty pathetic). I know about AdventureWorks and Northwind for SQL Server, but I haven't really heard of any other "classic" examples for the other database types I support: Oracle, MySQL, PostgreSQL, and SQLite. Ultimately, I would like both interesting/familiar schemas and some cool queries as the "Example Fiddle" for each type. However, for the moment I'm only looking for the schema; the queries can come later. Please point me in the direction of some of those interesting schemas, targeted for each database type.

Answer 1

For PostgreSQL see "Sample Databases".