APEX

Can someone point me to some document/whitepaper that describes how to setup Apex to work with Oracle Database Vault?

My understanding is that data in tables secured by Vault's realms is not accessible even to DBAs (select any table) which is great. But how that does impact Apex applications? The data would have to to be accessible to the app's parsing schema. So unauthorized users can still gain access to the data via the Apex app instead of direct database access. Does Apex provide for tighter integration with Vault to prevent this sort of access?

Thanks