With the more and more growing demand for semantic Web services over large databases, an efficient evaluation of Datalog queries is arousing a renewed interest among researchers and industry experts. In this scenario, to reduce memory consumption and possibly optimize execution times, the paper proposes novel techniques to determine an optimal indexing schema for the underlying database together with suitable body-orderings for the Datalog rules. The new approach is compared with the standard execution plans implemented in DLV over widely used ontological benchmarks. The results confirm that the memory usage can be significantly reduced without paying any cost in efficiency. This paper is under consideration in Theory and Practice of Logic Programming (TPLP).
@article{arxiv.1907.12495,
title = {Precomputing Datalog evaluation plans in large-scale scenarios},
author = {Alessio Fiorentino and Nicola Leone and Marco Manna and Simona Perri and Jessica Zangari},
journal= {arXiv preprint arXiv:1907.12495},
year = {2020}
}
Comments
Paper presented at the 35th International Conference on Logic Programming (ICLP 2019), Las Cruces, New Mexico, USA, 20-25 September 2019, 16 pages