51.23. pg_foreign_data_wrapper#
The catalogpg_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 51.23. pg_foreign_data_wrapper Columns
Column Type Description |
|---|
Row identifier |
Name of the foreign-data wrapper |
Owner of the foreign-data wrapper |
References a handler function that is responsible for supplying execution routines for the foreign-data wrapper. Zero if no handler is provided |
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 |
Access privileges; seeSection 5.8 for details |
Foreign-data wrapper specific options, as“keyword=value” strings |