Hi dixon,
there's a script in C:\Program Files\NCR\Tdat\LTDBMS\etc\perddl.bteq, but the sample db is quite small.
It's described in the manuals:
Basic Teradata Query Reference
APPENDIX B Loading and Using the Sample Personnel Database
Another option is to modify the Oracle script to Teradata-SQL. Then you could compare Teradata/Oracle SQL.
I did something similar once with Microsoft's pubs database.
Dieter