[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fP9M4yug8JhyahT7smVB5HzzTJEwlzrSDMACw72GlE1Y":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-05-18 13:40:34",15396319,[8,9,10,11],"切块","平移","钻取","切片",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},5,"2da1c0985870671f4fbfa6c71334ba78","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc73c6ef1e5bb897ee9933c209e10c3f5.png","数据仓库与数据挖掘","0209338ad1994cbab9affa47c63381d1","随堂测试2.2","以下OLAP操作中()的作用是改变维的层次,变换分析的粒度",[21,32,39,48,51],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],15396316,[25,26,27,28],"一个多维数组可以表示为(维1,维2,…,维m)","维的一个取值称为该维的一个维成员","OLAP是联机分析处理","OLAP是数据仓库进行分析决策的基础","以下关于OLAP的叙述中错误的是","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":38,"source":30,"type":31},[],15396317,[36,37,11,9],"上钻","下钻","OLAP的基本操作不包括",{"answer":40,"createTime":5,"id":41,"options":42,"question":47,"source":30,"type":31},[],15396318,[43,44,45,46],"I、Ⅱ和Ⅲ","I、Ⅱ和Ⅳ","Ⅱ、Ⅲ和Ⅳ","都是","OLAP包括以下()基本操作功能I.上卷 Ⅱ.切片 Ⅲ.转轴 Ⅳ.切块",{"answer":49,"createTime":5,"id":6,"options":50,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":52,"createTime":5,"id":53,"options":54,"question":57,"source":30,"type":31},[],15396320,[8,55,56,37],"转轴","上卷","在OLAP的基本操作中,在给定的数据立方体的两个或更多个维上进行选择操作得到一个子立方体,这个操作称为()"]