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This is a new O2M data conversion tool available at


It is a practical example of using one-to-many (O2M) mapping for the handling of resources from an external server.

In this case we summon a remote server at the European Central Bank (ECB) which handles currency exchange rates. Reference rates are updated at around 16:00 CET by ECB so you get the most recent exchange rate results.

Just input a value and press the Enter key. No need to mess over and over with annoying pull-down menus or remember currency acronyms.