Gustavo Moda wrote:

> They are seing procedures and trigger, and can understand some
> business rules of my software.
> Then, exploring source code, they can manipulate some informations.

You can remove the trigger and stored procedure source in production
databases:

http://www.firebirdfaq.org/faq32

> How can I get better security in the database?

http://www.firebirdsql.org/manual/fbmetasecur.html


--
Milan Babuskov
http://www.flamerobin.org
http://www.guacosoft.com