schema encryption

[Ben Hollingsworth]

We're investigating a use for MySQL (or PostgreSQL) that would require us to either encrypt or sufficiently obfuscate either certain smaller tables or just the table definition / schema for a database.

Basic background: We want to integrate an RDBMS into the server side of our application. Users will store our app's data into individual databases, one DB per "job." We want the users to be able to transfer jobs to each other or to our support department by just zipping up the directory tree / tablespace. However, we don't want them to be able to give themselves administrative rights into our databases by simply moving the job (database) over to another MySQL server to which they already have administrative rights. I assume this can be adequately handled by encrypting either a small table containing all the proprietary info, or by just encrypting the schema description for the entire job (database).

Is there currently any way for us to accomplish either of these tasks?