Efficient evaluation of multiple linear recursions

The authors study the efficient evaluation of side-coherent multiple linear recursions, which can be further classified into three types: multiple one-sided, multiple balanced k-sided, and multiple mixed k-sided. New techniques are developed by integrating the existing single-linear recursive query evaluation methods with the idea of side-relation unioned processing, which leads to a set of efficient query evaluation algorithms such as a side-relation unioned transitive closure algorithm for the processing of Type I ML recursions and a generalized side-relation unioned magic sets method for the processing of Types II and III ML recursions. The authors describe the processing of single-probe queries on side-coherent ML recursions. They outline the processing of complex queries on ML recursions