> Let's say I want to develop an expert system, contain lots of knowledge
> base that I don't want anyone to get the database but from the
> application. Should I encrypt the data, and only the application know
> how to encrypt /decrypt (with drawback in performance)?
>
> This is not an issue for web based, since the database is centralized
> in the server. But for desktop application that I distribute with the
> database, the data could be read.
>
> Thank you for the feedback.