This explains how to create a foreign data wrapper.
So how to list all the existing foreign data wrappers ?
Many FDWs are listed in the Postgres Wiki:
https://wiki.postgresql.org/wiki/Foreign_data_wrappers
psql
has useful commands as well to know which FDWs are defined, e.g. \dew[+]
:
http://www.postgresql.org/docs/current/static/app-psql.html
Just \det
, or \det[+]
for more details.
See official documentation here.
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