Lecture, four hours; discussion, two hours; outside study, six hours. Enforced requisite: course 111. Modern computing has entered era of big data. Introduction to concepts and state-of-art in modern big data systems. Study of distributed storage and database systems, which provide foundation for other systems. Discussion of systems built for specific kinds of workloads, such as processing of streaming data, relational data, batched data, graph data, as well as machine learning. Letter grading.