A comma-separated values (CSV) file is used for the digital storage of data structured in a table of lists form, where each associated item (member) in a group is in association with others also separated by the commas of its set. Each line in the CSV file corresponds to a row in the table. Within a line, fields are separated by commas, each field belonging to one table column. Since it is a common and simple file format, CSV files are often used for moving tabular data between two different computer programs, for example between a database program and a spreadsheet program.
If you have an excel spreadsheet with the following columns
|First Name||Last Name||Mobile Number|
When this excel file is saved as a CSV file, if you view it (using Notepad or Text Edit) then the data will look something link this