Frequently asked questions

We use the term coverage to describe when a dataset is added to the database (dataset.coverage.start), and how often it is updated. While most data sources are updated automatically in specific intervals (the update frequency, dataset.coverage.frequency), this there are some exceptions.

This includes datasets where the original publisher has stopped releasing updates of the data, and datasets where we cannot fully automate the retrieval process (e.g. because of a firewall preventing automated access, or because the data is released in an unstructured form that requires manual cleaning). Some datasets are simply static documents: lists mandated by a law, or reports that are only published once.

In those cases, the date of the most recent version included in the database is also recorded as part of the metadata (dataset.coverage.end).