00569nam a2200193Ia 450000500170000000800410001702000150005804000180007304100080009108200200009910000230011924500760014225000130021826000350023130000300026665000240029665000280032065000270034820240429113525.0210716s2001    xx            000 0 und d  a817722302X  cAIMIT LIBRARY  aeng  a005.7 22bSIMG  aSimsion, Graeme C.  aData modeling essentials: bultimate reference /cBy Graeme C. Simsion.  a2 nd ed.  aNew Delhi :bDreamtech,c2001.  axii,459 p.;bPBc24.5 cm.  aBasic Normalization  aSubtypes and supertypes  aAdvanced data modeling