Oracle Database Administration from Zero to Hero - Using Database Links (Part 2 of 2)

The video tutorial explains how to create and use database links in Oracle databases. It covers fixed and connected user database links, their syntax, and examples. The tutorial also discusses using database links with synonyms, restrictions, and relevant documentation. Key concepts include understanding database link types, naming conventions, and the importance of global names.

What is the purpose of the PUBLIC keyword in a CREATE DATABASE LINK statement?

• To encrypt the database link

• To specify the database link's priority

• To make the database link accessible to all users

• To create a temporary database link

Which file is used to configure a network service name for a database link?

• tnsnames.ora

• listener.ora

• sqlnet.ora

• init.ora

In a connected user database link, what is not required in the CREATE DATABASE LINK statement?

• The network service name

• The connection string

• The database link name

• The username and password

How can you simplify access to remote objects in a database?

• By creating a duplicate of the remote object locally

• By creating a local synonym for the remote object

• By using a temporary database link

• By renaming the remote object

What is a common practice to refer to remote objects in IT systems?

• Creating synonyms

• Renaming objects

• Using direct object names

• Duplicating objects

What happens if a database link name matches the current database global name?

• The database link is automatically deleted

• An error is thrown

• The database link is prioritized over local objects

• The database link is ignored and the local object is accessed

Where can you find documentation on using database links in Oracle?

• Oracle Performance Tuning Guide

• Oracle Database Administrator's Guide

• Oracle SQL Developer Guide

• Oracle Network Services Guide