The Currency query subject includes the following:
Id—Unique identifier
Currency—Currency name, localized based on your locale if you have created columns in the database to support this; if there is no such column for your locale it uses the information in the default language.
Currency(default language)—The name of the currency in your site’s default language.
ISO 4217 ALPHA3 CODE—Three-letter ISO code for language.
ISO 4217 NUM3 CODE—Three-number ISO code for language.
The Currency regular dimension has one hierarchy, which has two levels: Currency and Currency (All).