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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
B.transactions
C.datA.sarts
D.OLAPs
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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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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
OLTPsB
transactionsC
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OLAPs
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