>Dear Mr.Bruce Campbell.
>Thanks... for your reply....^^;
>
>I want to your any suggetion about this problem.
>let me see......
>
>Truth, I need a solution that anyother can't see the DBC structure.
>I developed the one package application.
>In this application, DBC structure is very important. so, I must hide it's
>structure(DBC)
>
>Only can access this DBC in my application and any other tools and
>any xBase application and development tool environment.
>
>it's very delicate problem for commercial......

That's a tough requirement you have, even SQL Server or MS Access has trouble with that situaution: giving the user full access, but not allowing the DB table structure to be seen with any software. The only solution I can think of is one we already discussed: compile a fixed DBC into the application. Restrictive, but otherwise should work.

Maybe someone else has another idea...