Java and Databases by Roberto Zicari · Published May 1, 2004 · Updated February 16, 2014 Chris Smith, MindIQ Persistence strategies for Java; incl. EJB, Hibernate, JDO and db4o. DOWNLOAD (PDF) or (PPT)
PM3: An Orthogonally Persistent Systems Programming Language January 1, 1999 by Roberto Zicari · Published January 1, 1999 · Last modified February 19, 2014
Oscillating Between Objects and Relational: The Impedance Mismatch January 1, 2002 by Roberto Zicari · Published January 1, 2002 · Last modified February 16, 2014
Object Persistence Design Guidelines January 1, 2005 by Roberto Zicari · Published January 1, 2005 · Last modified February 19, 2014