The  following file format of  inv_nbr, inv_name, inv_cost is called delimited format.
<h3>What is a delimited file in Excel?</h3>
The term "Delimited" is known to be a term that connote a form of  an  TXT file that tends to make use of tabs or an  CSV file that uses commas to  be able to separate and group your data. 
Note also that a  delimited file is seen as a form of a given sequential file that is made up of column delimiters.
Therefore, The  following file format of  inv_nbr, inv_name, inv_cost is called delimited format.
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Multiple Choice
fixed-width format
extensible markup
delimited format
hypertext format