Hello Henrique
Thank you for your answer. Those are two good links. Unfortunately I already knew them. Alvaro's scripts are to complex for a Hello world script and they don't explain the pros and cons of table types versus physical tables. When I'm sufficient desperate, I will use his scripts and then start tinkering. But this will take more time, and time is realy scarce. So that's why I'm looking for a basic Hello world script.
Regards, Robbert