What are the benifits of using master excel file to write the data, can any one help me

What are the benifits of using master excel file to write the data, can any one help me
and how to use to write data
can any one please tell me the steps

Hey,

You can use the Excel file As raw data where you will read the data and then you can
work on it as well as use this excel file to write the data.
Thanks