I have uploaded a set of persistence design notes at http://www.openehr.org/FAQs/t_persistence_notes.htm
Comments & contributions welcome. - thomas beale -- ___________________________________________________________________________________ CTO Ocean Informatics (http://www.OceanInformatics.biz) Research Fellow, University College London (http://www.chime.ucl.ac.uk) Chair Architectural Review Board, openEHR (http://www.openEHR.org)

