Eurostat Data

For the Eurostat Data entry, retain more than the query URL when an analysis must be reproducible.

Eurostat's API introduction explains that its database provides the latest dataset versions rather than a historical version archive. Repeating a query later may therefore retrieve revised data.

Save the retrieval time, dataset identifier, dimensions, units, and the actual data used. Keep revisions distinguishable from a code change when a previously calculated result no longer matches.