Fact-based information modeling language (see http://orm.net), relational mapper, and fact-oriented database query/update implementation to replace ActiveRecord, supporting a higher level of schema design abstraction, performance and concurrency.
A. Holupirek, C. Grün, and M. Scholl. Datenbanksysteme in Business, Technologie und Web (BTW 2007), 12. Fachtagung des GI-Fachbereichs "Datenbanken und Informationssysteme" (DBIS), volume 103 of LNI, page 309-323. GI, (2007)
E. Shelley, and B. Johnson. Proceedings of the Third National Conference on the Management of Geoscience Information and Data, Adelaide, South Australia, Australian Mineral Foundation, (1995)