Oracle Database Links
A database link (dblink) links databases. It allows you to query against other databases using the syntax
Use the following code to create a database link:
create database link "database_link_name"
connect to username
identified by "password"
The values you need to plugin are:
database_link_name the name you want to give your database link and what you enter after the
username the username to connect to connect to the database
password the password for the username to connect to the database
connect_name the TNS or full domain name to uniquely identify the database connection