商业智能关注如何从业务数据中提取有用的信息，然后采用这些信息指导企业的业务开展。商业智能系统主要包括数据预处理、（ ）、数据分析和数据展现4个主要阶段。其中数据预处理是整合企业原始数据的第一步，它包括数据的抽取、（ ）和加载三个过程。
问题1选项
A.数据索引
B.数据仓库
C.数据库
D.数据字典
问题2选项
A.转换
B.分析
C.查询
D.建模
正确答案及解析
正确答案
解析
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