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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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