Oracle Database Administration from Zero to Hero - Practice - Using External Tables

This video tutorial covers the creation of external tables using Oracle Loader and Data Pump Access drivers. It includes practical steps for generating CSV files, transferring them, and linking them to external tables. The tutorial also explains how to handle data types, manage errors, and clean up after operations. Key takeaways include understanding the use of Oracle Loader for text files and Data Pump for binary dump files.

What is required to implement the practice involving Oracle Loader and Data Pump Access Drivers?

• Neither Linux nor Windows VMs

• Only Linux VM

• Only Windows VM

• Both Linux and Windows VMs

What is the first step in creating an external table using Oracle Loader Access Driver?

• Open SQL Developer

• Log into the database as HR

• Generate a CSV file

• Create a directory object

How is the date column displayed when retrieving data from the external table?

• As a string

• Using the NLS DATE format setting

• In the format saved in the external file

• As a number

What happens when a corrupted data record is present in the CSV file?

• The query returns all records

• The query returns fewer records

• The query fails completely

• The query returns duplicate records

What is the purpose of creating an external table in SRV one using Oracle Data Pump?

• To link text data files

• To unload query results into a dump file

• To update data in the database

• To delete data from the database

What must be defined when creating an external table linked to a dump file in Win SRV?

• The user permissions

• The column data types

• The database version

• The file path

What is the result of querying an external table linked to a dump file?

• It updates the dump file

• It deletes the dump file

• It retrieves data from the dump file

• It runs the original query again

What is a limitation of external tables using Oracle Loader Access Driver?

• They cannot link text data files

• They cannot be used in SQL queries

• They cannot unload data tables into external files

• They cannot be used in PL/SQL

What is a key feature of external tables using Oracle Data Pump Access Driver?

• They can only be used with text files

• They cannot be moved to other databases

• They upload data into binary dump files

• They require manual data type definition

What is a conclusion about using Oracle Loader and Data Pump Access Drivers?

• They are interchangeable for all tasks

• They serve different purposes for external tables

• They are only used for text files

• They cannot be used in SQL