[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f1Y9eIbXOL5f_mFxuXojMUHxuSOKyGuUS9i52Sm_o0G8":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":28,"type":29},[],"2023-12-26 11:25:31",121864959,[8,9,10,11],"实体联系图(E-R图)","层次图","PAD图","数据流图",{"courseId":13,"courseImg":14,"courseName":15},"bc0ffb9a9c5a7ba59289e272c683e12e","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7e2d5ad53be3d12aacc56ee37db405b7.jpg","数据库原理","表示实体类型和实体间联系的模型,称为( )",[18,30,39,48,58,68,77,86,95,103],{"answer":19,"createTime":20,"id":21,"options":22,"question":27,"source":28,"type":29},[],"2023-12-26 11:25:28",121864923,[23,24,25,26],"视图","事务","存储过程","存储函数","( )是指一个 操作序列,是一个不可分割的逻辑工作单元.必须完整地执行,或者全部不执行","v1",0,{"answer":31,"createTime":20,"id":32,"options":33,"question":38,"source":28,"type":29},[],121864929,[34,35,36,37],"外模式\u002F模式映象 ;模式\u002F内模式映象","外模式\u002F模式映象 ;外模式\u002F内模式映象","逻辑模式\u002F模式映象 ;概念模式\u002F模式映象","子模式\u002F模式映象 ;模式\u002F概念模式映象","数据库的三级模式间存在两种映像,他们是( )和( )",{"answer":40,"createTime":20,"id":41,"options":42,"question":47,"source":28,"type":29},[],121864941,[43,44,45,46],"连接查询","子查询","左外连接","右外连接","( )是指对两个或两个以上的表或视图的查询",{"answer":49,"createTime":50,"id":51,"options":52,"question":57,"source":28,"type":29},[],"2023-12-26 11:25:29",121864949,[53,54,55,56],"DBS","DATA","DBA","DBMS","数据库管理系统缩写为( )",{"answer":59,"createTime":60,"id":61,"options":62,"question":67,"source":28,"type":29},[],"2023-12-26 11:25:30",121864953,[63,64,65,66],"原子性、一致性、隔离性、持久性","一致性、可恢复性、完整性、安全性","原子性、完整性、安全性、永久性","完整性、安全性、原子性、隔离性","事务的特性有( )",{"answer":69,"createTime":60,"id":70,"options":71,"question":76,"source":28,"type":29},[],121864954,[72,73,74,75],"跳转到事务程序的开始处继续执行","跳转到事务程序的结束处继续执行","撤销该事务对数据库的所有INSERT、UPDATE、DELETE操作","将事务中所有变量的值恢复到事务开始的初值","事务回滚指令ROLLBACK执行的结果是( )",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":28,"type":29},[],121864955,[81,82,83,84],"CERATE DATABASE","CREATE INDEX","CREATE VIEW","CREATE USER","在MySQL中,可以用( )语句来创建视图",{"answer":87,"createTime":5,"id":88,"options":89,"question":94,"source":28,"type":29},[],121864957,[90,91,92,93],"系统","概念","数据","逻辑","对现实世界进行第一层抽象的模型称为( )模型",{"answer":96,"createTime":5,"id":97,"options":98,"question":102,"source":28,"type":29},[],121864958,[99,100,101],"数据冗余、插入异常、删除异常、更新异常B.插入异常、删除异常、更新异常、查询异常","备份异常、恢复异常、概念异常、逻辑异常","建库异常、建表异常、数据异常、逻辑异常","一个没有设计好的关系模式可能存在( )",{"answer":104,"createTime":5,"id":6,"options":105,"question":16,"source":28,"type":29},[],[8,9,10,11]]