本文作者以規劃「國家電影資料庫」之經驗為例，認為當在建立電影資料庫時，若需鑑定電影檔案之保存價值，應該排除以歷史及藝術的意義與重要性作為主觀之篩選條件，而提出以影片保存狀況（包含拷貝數目與保存現狀）為主要考量的客觀條件。在此原則下，只要經費許可，將不分影片在藝術與商業上的價值，一律收藏與數位化，以為後代人保存最多元的電影文化遺產。

　　　　　The author of this essay uses his experience in the planning of “The National Motion Pictures Database” to consolidate his point that when building a digital film database, from being subjective historical and artistic meanings and weights should be excluded selection criteria in the appraisal of the preservation value of film archives. Rather, the preservation conditions (including the number of available copies in existence and their current conditions) should be considered as the main objective criterion. If possible, we should try to preserve and digitize as many decaying films as possible, regardless of their artistic or commercial values. In so doing, we will be able to preserve the most varied film culture heritage.