The full name of CSV is Comma Separated Values, and this format of file stores the table data in plain text (only contains numbers and letters). Most of the data file processing software (such as Microsoft Excel) can import/export and edit this file format.

CSV (short for Comma Separated Values) is a plain text file format that uses comma, Tab or other delimiters to separate the file content. It's very common to use a .csv file to store the tabular data. For example, a lot of small programs use the CSV file to keep their configuration and data. In general, the most convenient way to view and edit a CSV file is really to use Microsoft Excel. However, it has a disadvantage - the edited and saved CSV file format is not UTF-8 by default. And, most of other third-party CSV editors do not support UTF-8 format well either.