I once discussed with you all regarding Oracle's FlashBack Query feature to
recover a database to a certain point of time. That time you all suggested
some indepth cons of this and how it is resource hungry.

One more feature that I am not sure PostgreSQL has is, row-level,
column-level security. Oracle call this Label-Security in which you define a
policy for certain columns so that they are not visible to un-authorised
users during SELECT queries. This is an important security enhancement. One
other feature is called Fine-Grained Auditing. Ability to track user
activities. I hope this is in PostgreSQL in one form or the other.

I want to know your views on this.

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