CSV
Also written: comma-separated values, CSV file
A plain text file with one record per line and commas between the values. The expense tracker stores lines like `2026-10-21,postage,12.50` in `expenses.csv`.
Also written: comma-separated values, CSV file
A plain text file with one record per line and commas between the values. The expense tracker stores lines like `2026-10-21,postage,12.50` in `expenses.csv`.