Programming Pig by Roberto Zicari · Published November 1, 2012 · Updated November 3, 2013 by Alan Gates LINK (free online version)
SQL on Big Data Technology, Architecture, and Innovation December 7, 2016 by Roberto Zicari · Published December 7, 2016
Data-ism: The Revolution Transforming Decision Making, Consumer Behavior, and Almost Everything Else June 1, 2015 by Roberto Zicari · Published June 1, 2015