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
038.02 The JDO Object Model June 1, 2001 by Roberto Zicari · Published June 1, 2001 · Last modified February 18, 2014
Persistence Model Patterns A Practitioner’s View January 1, 2009 by Roberto Zicari · Published January 1, 2009 · Last modified February 16, 2014
Impedance Mismatch is not an “Objects vs. Relations” Problem.(DRAFT) August 1, 2012 by Roberto Zicari · Published August 1, 2012 · Last modified February 16, 2014