00330nam a2200121 a 450000500170000000800410001704100080005810000160006624500550008225000120013726400430014930000160019220260717092109.0260717s2000    ii            000 0 eng d  aeng1 aDate, C. J.13aAn Introduction to Database Systems /cDate, C. J.  a7th Ed. 1aSingapore :bPearson Education,c2000.  axxii, 938p.