On Wed, 2020-05-13 at 10:12 +0300, Amine Tengilimoglu wrote: > In addition to the actively used data, there are other data that are very little accessed. > I want to separate the less used data to save space and reduce maintenance operations. > I want to use a separate postgres instance for this. Now the question is; How do I link > these two instances? postgres_fdw or dblink? or what other solution? Which one would be better? Foreign Data Wrapper is a good option, and yes, it is secure. Another option would be to store these data as CSV files and use file_fdw to define them as "external tables". Yours, Laurenz Albe -- Cybertec | https://www.cybertec-postgresql.com