Em 5/3/2012 16:19, Marcelo Trópia escreveu:

> Hi Iwan, thank you.
>
> Regarding DB2 security (mainframe DB2 no z/OS), yes, there is this kind of
> security. If someone copy the VSAM dataset (DB2 tablespace access method)
> and try to register this tablespace on other DB2 instance, DB2 will not
> accept it because dbid and obid identifiers are stored inside the dataset
> and you need to know these identifiers to inform to DB2. Someone with a deep
> knowing of DB2 (a hacker) could discover these identifiers, but it is not
> easy.
>
> Best regards,
> Marcelo
>

Forgot to mention...

Read this article:
http://www.firebirdsql.org/manual/fbmetasecur.html

It describes quite well the problem.