CSV means comma separated values. It's like a normal "txt" file with commas at regular places to separate some values. Typically the first line of CSV file is a "header", containing names of columns ...

Once your CSV files are properly sorted on a primary key, they can also be efficiently compared to produce a diff file, using my other lib https://github.com ...

Don't settle for the Windows default file manager. Here are three options that improve on the default. Each of these can be installed and used for free. The file manager is one app that doesn't always ...