Oracle Database Administration from Zero to Hero - Using Database Links (Part 1 of 2)

This video tutorial covers the concept of database links in Oracle databases, explaining their types, such as public, private, and global links. It also discusses how users can connect to remote databases using connected, fixed, and current user options. Additionally, the tutorial delves into the importance of global names and their relationship with database links, emphasizing the recommended settings for database link names to match global names.

What is the primary function of a database link in Oracle databases?

• To update the database schema

• To delete objects in a database

• To access objects in a different database

• To create new databases

Which type of database link can be accessed by all users in an Oracle database?

• Global database link

• Public database link

• Private database link

• Local database link

How is a private database link created in Oracle?

• CREATE LOCAL DATABASE LINK

• CREATE GLOBAL DATABASE LINK

• CREATE DATABASE LINK

• CREATE PUBLIC DATABASE LINK

What is required for a connected user to access a remote database using a database link?

• The same account, username, and password in the remote database

• A global account in the remote database

• A different account and password in the remote database

• No account in the remote database

Which user option allows a user to connect to a remote database without knowing the password?

• Connected user

• Fixed user

• Current user

• Anonymous user

What format do database global names follow in Oracle databases?

• domain@dbname

• dbname@domain

• domain.dbname

• dbname.domain

What happens if the global names parameter is set to true in Oracle databases?

• Database link names are ignored

• Database link names must be unique

• Database link names must match the global names of the target databases

• Database link names can be arbitrary