Object-Oriented Programming Concepts by Roberto Zicari · Published November 10, 2013 · Updated November 10, 2013 Sun, The Java Tutorial A great tutorial to get acquainted with OOP. LINK
Product Release: Caché 2015.1 and Ensemble 2015.1- InterSystems Corporation. February 4, 2016 by Roberto Zicari · Published February 4, 2016
Persistence Model Patterns A Practitioner’s View January 1, 2009 by Roberto Zicari · Published January 1, 2009 · Last modified February 16, 2014