How to enable Logon Trigger in postgres?

Hi all,

I wanted to know whether we can store logon(user login/logout) information
for a database. In specific I want to know at what time which user had
logged in and what he performed on the database and the time which he logged
off?

Is it possible to get this level of information in Postgres?

Will be very happy if we can get this piece of information from the
postgres(inbuilt/any tool). Looking forward to hearing from you!

Regards,
Pavan



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