required system data flow model gives a functional view of the required system 所需系統(tǒng)數(shù)據(jù)流程模型以功能的觀點來探討所需系統(tǒng)。
current physical data flow model describes the functional aspect of the current environment 現(xiàn)時實體數(shù)據(jù)流程模型描述現(xiàn)時環(huán)境的功能。
after the current physical data flow model is confirmed with users, logicalize it to produce the logical data flow model 與用戶確認現(xiàn)時實體數(shù)據(jù)流程模型后,將之邏輯化,以編制邏輯數(shù)據(jù)流程模型。
after the current physical data flow model is confirmed with users, logicalize it to produce the logical data flow model 與用戶確認現(xiàn)時實體數(shù)據(jù)流程模型后,將之邏輯化,以編制邏輯數(shù)據(jù)流程模型。