GYO reductions, canonical connections, tree and cyclic schemas and tree projections
Nathan Goodman, Oded Shmueli, Yong Chiang Tay · 1983
Database schemas may be partitioned into two sub-classes tree schemas and cyclic schemas. The analysis of tree vs cyclic schemas introduced the concepts of GYO reductions, canonical connections and tree projections. This paper investigates the intricate relationships among these concepts in the context of universal relation databases.