Course Introduction and History of Database Systems M. Stonebraker, et al., What Goes Around Comes Around, in Readings in Database Systems, 4th Edition, 2006 (Optional) A. Pavlo, et al., What's New with NewSQL?, in SIGMOD Record (vol. 45, iss. 2), 2016 (Optional) In-Memory Databases H. Garcia-Molina, et al., Main Memory Database Systems: An Overview, in IEEE Trans. on Knowl. and Data Eng., 1992 S.