00544pamaa2200181 4500 0000019757 20120216090000.0 0471337900 005.74 DOR QA76.9 DOR 1996 D'ORAZIO Practical data modelling for database disign Renzo D'Orazio and Gunter Happel. Brisbane: John Wiley, 1996. xii, 284p.: 25cm. The information technology series Database design Data structures (Computer science) Happel, Gunter