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Published May 20, 2026 | Version Published Journal Article Open There has been long-standing controversy regarding the origin and transport of short-lived energetic ion events observed upstream of the Earth’s bow shock. In this work, by adopting a unique method, we study the characteristics of 152 upstream ion events observed by the Suprathermal Energetic Particles (STEP) instrument on board the Wind satellite during 2012–2017.

Published May 1, 2026 | Version Published Journal Article Open Lo, Ming-Yuan1, 2 Guo, Fan1, 3 Giacalone, Joe4 Zhao, Lulu5 Lario, David6 Koban, Gergely5 Ho, George C.7 Cohen, Christina M. S.8 1. New Mexico Consortium 2. University of California, Los Angeles 3. Los Alamos National Laboratory 4. University of Arizona 5. University of Michigan–Ann Arbor 6. Goddard Space Flight Center 7. Southwest Research Institute 8.

In this assignment, I practiced creating tables with different constraints like PRIMARY KEY, NOT NULL, UNIQUE, CHECK, DEFAULT and FOREIGN KEY.