How about adding "database" as a reference type? Arguably several existing item types can (and do) serve, but having the requisite fields and no extraneous ones would streamline use. In the sciences at least we're increasingly required to cite publicly available databases. For example, see Twardochleb, L.A., E. Hiltner, M. Pyne, P. Bills, and P.L. Zarnetske. 2020. Freshwater insect occurrences and traits for the contiguous United States, 2001 - 2018 ver 5. Environmental Data Initiative. https://doi.org/10.6073/pasta/8238ea9bc15840844b3a023b6b6ed158