By necessity, we had to design and build an open ontology for different fields of structured data and meta-data – which number over 1,200 and growing. Other efforts to better organize data informed our work, like the semantic web, but we had to stick a flag in the sand to make a user-centric system work. We have published the ontology, which you are free to adopt or help us improve upon. You can search and interact with the ontology, which features DataRank. View the TeamData Data Ontology.