Indexes on foreign keys

SQL Server automatically creates a clustered index on a primary key column/s.

You can change this to be a non clustered index if required, maybe there is a better choice for the clustered index.

When you create a foreign key, nothing happens except the building of the PK/FK relationship.

Should creating a FK also create a non clustered index. I think that it should.

This could help query performance, especially joins.