DB2 goes hybrid: Integrating native XML and XQuery with relational data and SQL. - Kevin S. Beyer; Roberta Cochrane; M. Hvizdos; Vanja Josifovski; Jim Kleewein; George Lapis; Guy M. Lohman; Robert Lyle; Matthias Nicola; Fatma Özcan; Hamid Pirahesh; Normen Seemann; et al. (IBM Syst. J., 2006)