Описание тега dblink
An object or module that enables access to a remote database.
In Oracle a database link is a schema-level object that enables users to access objects on a remote database. It is possible to create a database link to access a non-Oracle database.
In PostgreSQL dblink is a module, which enables connections to other PostgreSQL databases, from within a session.
Questions tagged dblink should also be tagged with the appropriate RDBMS.