Mohamed Chakraoui, Abderrafiaa El Kalay, and Naoual Mouhni. “TUNING DIFFERENT TYPES OF COMPLEX QUERIES USING THE APPROPRIATE INDEXES IN PARALLEL/DISTRIBUTED DATABASE SYSTEMS”. GEOMATE Journal 11, no. 24 (April 12, 2017): 2267–2274. Accessed May 3, 2024. https://geomatejournal.com/geomate/article/view/2063.