Odoo provides an option for automatic update of the currency exchange rate.When a customer and dealer are from different countries, there comes the need of currency exchange rate.
Let us check how to enable it:
Go to- Accounting - Configuration- Settings- Enable multi-currency and automatic currency rates
One can set a service from where you want to get exchange rates. also set next update of currency rate.you can update currency rate manually and last sync date will appear automatically.you can see the past currency rates and history.