The catalog pg_foreign_data_wrapper stores foreign-data wrapper definitions. A foreign-data wrapper is the mechanism by which external data, residing on foreign servers, is accessed.
Table 45-20. pg_foreign_data_wrapper Columns
|fdwname||name||Name of the foreign-data wrapper|
|fdwowner||oid||pg_authid.oid||Owner of the foreign-data wrapper|
|fdwvalidator||oid||pg_proc.oid||References a validator function that is responsible for checking the validity of the generic options given to the foreign-data wrapper, as well as to foreign servers and user mappings using the foreign-data wrapper. Zero if no validator is provided.|
|fdwacl||aclitem||Access privileges; see GRANT and REVOKE for details|
|fdwoptions||text||Foreign-data wrapper specific options, as "keyword=value" strings|
If you see anything in the documentation that is not correct, does not match your experience with the particular feature or requires further clarification, please use this form to report a documentation issue.