اﻟﺘﻌﺎﻣﻞ ﻣﻊ اﻟﺒﻴﺎﻧﺎت اﻟﻔﺼﻞ اﻟﺜﺎﻧﻰ Related Records (+) . . Orders (-) (+) (-) (+) Employees . : -١ One-to-One (1:1) .… . .. .١ ١ ﺒﻴﻨﻤﺎ. … . … ٤٧