【单选题】What act does the US Congress pass to authorize certain government agencies to surveillance its citizens at home and abroad after the September 11 terrorist attacks?
【简答题】What does the story tell us about the old woman? A) She was found stealing in a bookstore. B) She caught someone in the act of stealing. C) She admitted having stolen something. D) She said she was wr...
【多选题】下列关于数据仓库的说法中,正确的是
B.
数据仓库是面向主题的、集成的、稳定的、不同时期的数据集合
D.
数据仓库创建目的主要是用于满足企业数据分析和决策支持的需要
【简答题】What does the author’s experience in the service station tell us? It tells us that a [填空1] attitude may have a profound effect on the way we feel and act.
【单选题】数据仓库是一种只读的、用于分析的数据库,常常作为决策支持系统的底层。以下对于数据仓库描述不正确的是( )。
B.
它从大量的事务型数据库中抽取数据,并将其清理、转换为新的存储格式
C.
数据仓库是支持管理决策过程的、面向主题的、集成的、随时间变化的,但信息本身相对稳定的数据集合