Derived data is redundant because it派生数据是冗余的，因为它:()?
（A）Is a backup for the primitive data是原始数据的备份
（B）All所有
（C）Is only calculated data仅为计算数据
（D）Has the same name as primitive data与原始数据同名
（E）Is transformed primitive data是转换后的基元数据 答案解析:
参考答案
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