Discussion Board for collaboration related to QlikView App Development.
there's something already in place to integrate in QlikView all exchange rates?
What are you trying to do.
Do you want exchange rate data? If yes then you should look for Qlik Data Market.
No, there are no special scripting features or User Interface objects that specifically deal with currency conversions or make life easier for the developer that has to include them in a new document.
However, there are quite a few examples in the community that demonstrate techniques to include exchange rates in your document.
See for example: Currency Conversion