[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fRC1QbJqX2DOSeG54QrN0WInPMvsQ-NICbdvUV3ckxJE":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-08-14 01:31:00",214528014,[8,9,10,11],"ALTER TABLE Reader ADD CONSTRAINT check (Email like '%@%')","ALTER TABLE Reader ADD CONSTRAINT CK_Reader (Email like '%@%')","ALTER TABLE Reader ADD CONSTRAINT CK_Reader check (Email like '%@%')","ALTER TABLE Reader ADD CK_Reader check (Email like '%@%')",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},15,"0043d5433fd26fd1c70c689c2639efce","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0dae5231eef5a894c924a1ac5e95f515.png","数据库原理及应用","work_28974306","数据增、删、改和约束","为表Reader中的Email字段添加检查约束,要求该字段需要有"@"符号,正确的命令是",[21,32,37,42,51,60,69,76,85,94],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],214528005,[25,26,27,28],"INSERT INTO","UPDATE","DELETE","SELECT","插入语句命令是","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":36,"source":30,"type":31},[],214528006,[25,26,27,28],"更新数据命令",{"answer":38,"createTime":5,"id":39,"options":40,"question":41,"source":30,"type":31},[],214528007,[25,26,27,28],"删除数据命令",{"answer":43,"createTime":5,"id":44,"options":45,"question":50,"source":30,"type":31},[],214528008,[46,47,48,49],"INSERT INTO ReaderType VALUES(1,"企业职工",5,30)","INSERT INTO ReaderType VALUES(1;"企业职工";5;30)","INSERT INTO ReaderType VALUE(1,"企业职工",5,30)","INSERT INTO ReaderType VALUE(1;"企业职工";5;30)","向表ReaderType中插入数据,正确的是",{"answer":52,"createTime":5,"id":53,"options":54,"question":59,"source":30,"type":31},[],214528009,[55,56,57,58],"UPDATE TABLE ReaderType SET LimitDays=40 WHERE Typename='企业职工'","UPDATE ReaderType SET LimitDays=40","UPDATE ReaderType SET LimitDays=40 WHERE Typename='企业职工'","UPDATE TABLE ReaderType SET LimitDays=40","更改ReaderType中的数据,将"企业职工"的借阅天数改为40天,正确的语句是",{"answer":61,"createTime":5,"id":62,"options":63,"question":68,"source":30,"type":31},[],214528010,[64,65,66,67],"DELETE ReaderType","DELETE ReaderType WHERE Typename='企业职工'","DELETE TABLE ReaderType WHERE Typename='企业职工'","DELETE TABLE ReaderType","删除ReaderType表中"企业职工"的信息,正确的语句是",{"answer":70,"createTime":5,"id":71,"options":72,"question":75,"source":30,"type":31},[],214528011,[67,64,73,74],"DROP TABLE ReaderType","DROP ReaderType","删除ReaderType表中所有数据,正确的命令是",{"answer":77,"createTime":5,"id":78,"options":79,"question":84,"source":30,"type":31},[],214528012,[80,81,82,83],"ALTER TABLE ReaderType ADD CONSTRAINT primary key (TypeID)","ALTER TABLE ReaderType ADD CONSTRAINT PK_ReaderType(TypeID)","ALTER TABLE ReaderType ADD PK_ReaderType primary key (TypeID)","ALTER TABLE ReaderType ADD CONSTRAINT PK_ReaderType primary key (TypeID)","将表ReaderType中的TypeID设置为主键,正确的命令是",{"answer":86,"createTime":5,"id":87,"options":88,"question":93,"source":30,"type":31},[],214528013,[89,90,91,92],"ALTER TABLE ReaderType ADD CONSTRAINT UQ_ReaderType unique (Typename)","ALTER TABLE ReaderType ADD CONSTRAINT unique (Typename)","ALTER TABLE ReaderType ADD CONSTRAINT UQ_ReaderType (Typename)","ALTER TABLE ReaderType ADD UQ_ReaderType unique (Typename)","为ReaderType表中的Typename添加唯一约束,正确的语句是",{"answer":95,"createTime":5,"id":6,"options":96,"question":19,"source":30,"type":31},[],[8,9,10,11]]