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【单选题】
存储在计算机外部存储介质上的结构变化的数据集合,其英文名称是:A.
Data Dictionary（简写DD）
B.
Data Base System（简写DBS）
C.
Data Base（简写DB）
D.
Data Base Management System（简写DBMS）
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皮皮学刷刷变学霸
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