[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fuSJ7NLJXr86xDsEoCh_S6KuDOYhvh1wSw7bC0q3Z6es":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2024-05-16 21:19:54",143584344,[8,9,10,11],"CHAR","DOUBLE","SMALLINT","BYTE",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},176,"1377864de1675a7ce4abb837b4d86a5d","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c1e48361b00f3ee2086f4e259ed792b.jpg","数据库原理及应用","work_34783662","综合","您正在创建一个表来存储客户数据.AccountNumber 列使用的值始终由一个字母和四位数字组成.您应该对 AccountNumber 列使用哪种数据类型",[21,32,42,52,62,71,80,89,99,102],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],143584336,[25,26,27,28],"层次型","以上都不是","关系型","网状型","SQL Server 2005是一个()的数据库系统","v1",0,{"answer":33,"createTime":34,"id":35,"options":36,"question":41,"source":30,"type":31},[],"2024-05-15 22:43:56",143584337,[37,38,39,40],"6","12","8","9","若D1={a1,a2,a3},D2={1,2,3},则D1×D2集合中共有元组( )个",{"answer":43,"createTime":44,"id":45,"options":46,"question":51,"source":30,"type":31},[],"2024-05-16 21:19:53",143584338,[47,48,49,50],"select* from 学生 where 姓名='张三'","select* from 学生 where 姓名=张三","select 姓名 from 学生 where 姓名=张三","select* from 学生 where 姓名="张三"","查询学生表中姓名为张三的记录()",{"answer":53,"createTime":54,"id":55,"options":56,"question":61,"source":30,"type":31},[],"2024-05-15 22:43:58",143584339,[57,58,59,60],"连接","选择","投影","差","专门的关系运算包括选择,投影,连接,除运算等.其中从行的角度进行的运算是",{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":30,"type":31},[],143584340,[66,67,68,69],"char,varchar,text","char,varchar,int","int,money,char","datetme,binary,int","SQL Sever 的字符型系统数据类型主要包括",{"answer":72,"createTime":44,"id":73,"options":74,"question":79,"source":30,"type":31},[],143584341,[75,76,77,78],"是用户建立新数据库的模板","是一个临时数据库","没有权限","属于全局资源","下面关于Tempdb数据库描述不正确的是",{"answer":81,"createTime":82,"id":83,"options":84,"question":88,"source":30,"type":31},[],"2024-05-15 21:03:53",143584342,[85,86,37,87],"4","3","5","有两个关系R(A,B,C)和S(B,C,D),则R∞S结果的属性个数是()",{"answer":90,"createTime":91,"id":92,"options":93,"question":98,"source":30,"type":31},[],"2024-05-16 21:19:55",143584343,[94,95,96,97],"CHANGE","UPDATE","INSERT","SELECT","您有一个包含有关您的学校中所有学生的信息的表.要更改表中学生的名字,应该使用哪个SQL关键字",{"answer":100,"createTime":5,"id":6,"options":101,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":103,"createTime":44,"id":104,"options":105,"question":110,"source":30,"type":31},[],143584345,[106,107,108,109],"DDLS","DBS","DBMS","MYSQL","下列选项中哪一个是数据库系统"]