From their site: "Data Planet publishes statistical datasets that are sourced from a wide range of public and private organizations. We call Data Planet an “aggregation” of datasets – a collection of datasets served up together. It’s the same concept as the big journal databases available through your library that bring together journals from different publishers – we do something similar but with statistical datasets as the content."

By visiting Data Planet through the University Library proxy URL, you'll receive access to more datasets.