How to export data from Oracle database using SQL*Plus command line?

Oracle database is a collection of data which treated as a unit.  Oracle Database is the first database designed for enterprise grid computing which supports to connect hardware and software components on demand to meet the changing needs of businesses.

SQL*Plus is an interactive and batch command-line query tool that is installed with every Oracle Database installation. It can access through the following ways.

• Command-line user interface
• Windows Graphical User Interface (GUI)
• iSQL*Plus web-based user interface

In this article, I am focusing on how can we interact with the Oracle database using the Command-line user interface.