2013 ﻧﻤﺎذج إﺧﺘﺒﺎرات اﻟﻌﻤﻠﻲ Database Lab exams Page ١ Mr: Ahemd Elmasry Fannia Backbone 3/12/2013 ﻗﻮاﻋﺪ اﻟﺒﯿﺎﻧﺎت…