[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fO2vNRFMjxdPPY2utG4VIXXcrmLllZZoEQdKOZnKDAtM":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":18,"related":19,"source":29,"type":30},[],"2025-06-30 13:43:15",209913150,[8,9,10,11],"1NF","2NF","3NF","BCNF",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":16},50,"3b231e42361ac21d96341ef33b69df42","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbb062ff6068e05b64e1dc4486da29b2a.jpg","数据库原理与应用","exam_165066003","关系模型中的关系模式至少是()",[20,31,40,49,58,67,70,79,88,97],{"answer":21,"createTime":5,"id":22,"options":23,"question":28,"source":29,"type":30},[],209913120,[24,25,26,27],"SUM()","MAX()","COUNT()","AVG()","能对某列进行平均值运算的函数是()","v1",0,{"answer":32,"createTime":5,"id":33,"options":34,"question":39,"source":29,"type":30},[],209913126,[35,36,37,38],"数据库避免了一切数据的重复","若系统是完全可以控制的,则系统可确保更新时的一致性","数据库中的数据可以共享","数据库减少了数据冗余","在数据库中,下列说法()是不正确的",{"answer":41,"createTime":5,"id":42,"options":43,"question":48,"source":29,"type":30},[],209913132,[44,45,46,47],"大于25","大于59","大于任何数","存在条件数","SQL语言中,表达式:&gt;ALL(15,28,33,59),表示()",{"answer":50,"createTime":5,"id":51,"options":52,"question":57,"source":29,"type":30},[],209913138,[53,54,55,56],"CREATE SCHEMA","CREATE TABLE","CREATE VIEW","CREATE INDEX","在SQL中,建立表用的命令是()",{"answer":59,"createTime":5,"id":60,"options":61,"question":66,"source":29,"type":30},[],209913144,[62,63,64,65],"可能是1NF","必定是1NF","必定是3NF","必定是BCNF","关系模式中,满足2NF的模式()",{"answer":68,"createTime":5,"id":6,"options":69,"question":18,"source":29,"type":30},[],[8,9,10,11],{"answer":71,"createTime":5,"id":72,"options":73,"question":78,"source":29,"type":30},[],209913156,[74,75,76,77],"DDL","DML","DCL","数据库事务","语句GRANT、REVOKE实现了结构化查询语言的哪类功能()",{"answer":80,"createTime":5,"id":81,"options":82,"question":87,"source":29,"type":30},[],209913162,[83,84,85,86],"2004-3-15 '","2004","2006'","2006","表达式year(2004-3-13)+2的结果是()",{"answer":89,"createTime":5,"id":90,"options":91,"question":96,"source":29,"type":30},[],209913167,[92,93,94,95],"DBA","DB","DBS","DBMS","数据库的英文缩写是()",{"answer":98,"createTime":99,"id":100,"options":101,"question":106,"source":29,"type":30},[],"2025-06-30 13:43:16",209913172,[102,103,104,105],"(1)(2)(3)","(2)(1)(3)","(3)(1)(2)","(3)(2)(1)","创建数据表一般有三个步骤:(1)设置约束,(2)定义表结构,(3)添加数据.其中正确的排列步骤是()"]