Explore the intricacies of massively parallel evaluation of relational queries in this 47-minute lecture presented by Xiao Hu from the University of Waterloo and Paris Koutris from UW Madison. Delve into the realm of fine-grained complexity, logic, and query evaluation as part of the Simons Institute's series on advanced database concepts. Gain insights into cutting-edge techniques for processing large-scale relational data in parallel environments, and understand the theoretical foundations that underpin these approaches. Discover how researchers are pushing the boundaries of query optimization and execution in distributed systems to tackle the challenges of big data analytics.