Re: any default columns for tracking / auditing purpose

> On Nov 20, 2021, at 6:50 AM, Sanjay Minni <sanjay.minni@gmail.com> wrote:
>
>
> In Postgres 12 and up, are there any default columns available which could be useful for tracking / auditing purposes
?
> e.g.
> - real user who entered / updated the data
> - timestamp when data was updated / entered
> where can i get a list of such default columns (if any) - which could be accessed easily in user applications.
>
> also what is the usual practice in creating userID's in a large multi-tenanted applications with highly dynamically
changingusers (e.g students who enroll and go off after some sometime), with all users having the same access -  
> is a different userID created in the system for each user or is a common postgresID used by the application and the
applicationis responsible for tracking individual users with its own userID. (this will reduce system overhead) 
>
Never ever re-use an id.  There are lots of them.  If you need lots and lots of them use UUID.

> with warm regards
> Sanjay
>