In which currency does OWOX BI store data in the CostData_ tables?

OWOX BI uses the currency of associated Google Analytics View to convert and store data in the CostData_ tables. You can always check the current currency value on your Cost Data pipeline page:

If you change the currency in your Google Analytics settings, OWOX BI will automatically update the CostData_ tables according to a newly selected currency within the preset actualization period.