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 48-23. pg_foreign_data_wrapper Columns
|oid||oid||Row identifier (hidden attribute; must be explicitly selected)|
|fdwname||name||Name of the foreign-data wrapper|
|fdwowner||oid||pg_authid.oid||Owner of the foreign-data wrapper|
|fdwhandler||oid||pg_proc.oid||References a handler function that is responsible for supplying execution routines for the foreign-data wrapper. Zero if no handler is provided|
|fdwvalidator||oid||pg_proc.oid||References a validator function that is responsible for checking the validity of the options given to the foreign-data wrapper, as well as options for 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|
Please use this form to add your own comments regarding your experience with particular features of PostgreSQL, clarifications of the documentation, or hints for other users. Please note, this is not a support forum, and your IP address will be logged. If you have a question or need help, please see the faq, try a mailing list, or join us on IRC. Note that submissions containing URLs or other keywords commonly found in 'spam' comments may be silently discarded. Please contact the webmaster if you think this is happening to you in error.
Proceed to the comment form.