The requirements of a health data management system revealed from the evolving definitions of medical records and their management are 1 medical record data, 2 real time data access, 3 patient participation, 4 data sharing, 5 data security, 6 patient identity privacy, and 7 public insights. ...To our knowledge, this is the first analysis of the temporal evolution of health data management systems giving insights on the system requirements for better health care. ...