00639nam a2200205Ia 450000500170000000800410001702000180005804000180007604100080009408200210010210000270012324501080015025000120025826000350027030000320030565000230033765000290036070000230038970000210041220220705114138.0210716s2011    xx            000 0 und d  a9788131708422  cAIMIT LIBRARY  aeng  a005.74 21bGARH  aGarcia-Molina, Hector.  aDatabase systems :bthe complete book /cBy Hector Garcia-Molina, Jeffrey D. Ullman and Jennifer Widom.  a1st ed.  aNew Delhi :bPearson ,c2011 .  axxvii, 1118p. ;bPBc24 cm.  aRelational algebra  aConstraints and triggers  aUllman, Jeffrey D.  aWidom, Jennifer.