單項選擇題下列數(shù)據(jù)庫中,哪個是最簡單的NoSQL數(shù)據(jù)庫?()

A.鍵值對存儲數(shù)據(jù)庫
B.文檔存儲數(shù)據(jù)庫
C.列式存儲數(shù)據(jù)庫
D.圖形存儲數(shù)據(jù)庫


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