[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fQUkB-QESwIGzAcPr24Yb5iPEYJS3yCbyfyotqoiRtPM":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":26,"type":27},[],"2023-10-30 21:29:13",102608035,[8,9,10,11],"第一范式","第二范式","第三范式","以上都不对",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},3,"158cd20ee1dcede5be668aa3b15e8a72","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6b3be9bdfc58f5d47aee23d1eda81b8d.jpg","网络数据库(电商22级)","723bf2264c8741b38ca7cdf90104ce81","第6章第2节关系规范化课前练习","不包含重复组的关系属于( )",[21,28,37],{"answer":22,"createTime":5,"id":23,"options":24,"question":25,"source":26,"type":27},[],102608032,[8,9,10,11],"设有关系模式:学生(学号,姓名,所在系,班号,班主任,系主任),其语义为:一个学生只在一个系的一个班学习,一个系只有一个系主任,一个班只有一名班主任,一个系可以有多个班.该关系模式是( )","v1",0,{"answer":29,"createTime":5,"id":30,"options":31,"question":36,"source":26,"type":27},[],102608034,[32,33,34,35],"学生表(学号,姓名,所在系,班号,系主任) 班级表(班号,班主任)","学生表(学号,姓名,所在系,班号,班主任) 系表(所在系,系主任)","学生表(学号,姓名,所在系,班号) 班级表(班号,班主任) 系表(所在系,系主任)","学生表(学号,姓名) 班级表(班号,班主任) 系表(所在系,系主任)","设有关系模式:学生(学号,姓名,所在系,班号,班主任,系主任),其语义为:一个学生只在一个系的一个班学习,一个系只有一个系主任,一个班只有一名班主任,一个系可以有多个班.将该关系模式规范化为第三范式的结果是( )",{"answer":38,"createTime":5,"id":6,"options":39,"question":19,"source":26,"type":27},[],[8,9,10,11]]