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单选题
A data warehouse is a subject-oriented data set used for reporting and analusis. Data warehouses can be subdivided into ( ). Which store subsets of data from a warehouse.
A
OLTPs
B
transactions
C
data sarts
D
OLAPs
参考答案
参考解析
解析：
数据仓库是一个面向主题的用于报告和分析的数据集。数据仓库可以细分为数据集市，即从一个仓库中存储数据的子集。
A：联机事务处理
B：交易
C://数据集市
D://联机分析处理
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Set the Emit Default Value property of each data member to false.D
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