DR. P. G. KHOT, and SANJAY SRIVAS. “INTRODUCTION OF SPATIAL DATABASE SPATIAL DATA TYPES, SPATIAL INDEXING, GEOGRAPHIC INFORMATION SYSTEMS (GIS) &Amp; QUERY STRUCTURE”. JournalNX - A Multidisciplinary Peer Reviewed Journal (February 20, 2021): 137–142. Accessed February 11, 2025. https://repo.journalnx.com/index.php/nx/article/view/2048.