MongoDB数据库开发-题库带答案
MongoDB数据库开发-题库带答案
1、创建数据库mydb，给指定的集合添加⽂档。
db.students.insertMany([
{"_id":"1001","name":"程明","sex":"男","age":19,"major":"计算机应⽤技术","credits":52,score:92}, {"_id":"1002","name":"刘萍","sex":"⼥","age":18,"major":"移动应⽤开发","credits":51,score:88}, {"_id":"1003","name":"张静","sex":"⼥","age":20,"major":"计算机应⽤技术","credits":48,score:96}, {"_id":"1004","name":"陈好","sex":"⼥","age":20,"major":"软件技术","credits":53,score:97},
{"_id":"1005","name":"施⾏","sex":"男","age":20,"major":"计算机应⽤技术","credits":54,score:60}, {"_id":"1006","name":"刘⽂平","sex":"⼥","age":18,"major":"软件技术","credits":50,score:86}, {"_id":"1007","name":"李德胜","sex":"男","age":20,"major":"计算机应⽤技术","credits":55,score:95}, {"_id":"1008","name":"苏锦州","sex":"男","age":18,"major":"移动应⽤开发","credits":50,score:70}, {"_id":"1009","name":"张⽂杰","sex":"⼥","age":20,"major":"软件技术","credits":53,score:40}, {"_id":"1010","name":"王林","sex":"男","age":18,"major":"移动应⽤开发","credits":47,score:87}, {"_id":"1011","name":"程梦凡","sex":"男","age":19,"major":"软件技
术","credits":46,score:66}, {"_id":"1012","name":"陈⽟婷","sex":"⼥","age":19,"major":"计算机应⽤技术","credits":45,score:82}, {"_id":"1013","name":"张春华","sex":"男","age":19,"major":"软件技术","credits":45,score:64}, {"_id":"1014","name":"苏秦","sex":"⼥","age":18,"major":"计算机应⽤技术","credits":41,score:77}, {"_id":"1015","name":"李⾬桐","sex":"男","age":21,"major":"移动应⽤开发","credits":49,score:81}, {"_id":"1016","name":"唐开平","sex":"⼥","age":18,"major":"软件技术","credits":42,score:74}, {"_id":"1017","name":"罗世杰","sex":"男","age":21,"major":"移动应⽤开发","credits":57,score:64}, {"_id":"1018","name":"张可欣","sex":"⼥","age":20,"major":"计算机应⽤技术","credits":54,score:47}, {"_id":"1019","name":"刘柔","sex":"男","age":22,"major":"移动应⽤开发","credits":61,score:81}, {"_id":"1020","name":"王可可","sex":"⼥","age":17,"major":"计算机应⽤技术","credits":37,score:67}, {"_id":"1021","name":"王林","sex":"男","age":21,"major":"移动应⽤开发","credits":61,score:95}
])
答案：
10、mongoDB服务端默认的端⼝号是（）
答案：
27017
；
11、关于Mongodb下列说法不正确的是（）
A、启动客户端⽤mongo命令
B、 MongoDB是关系型数据库
C、 MongoDB⽀持海量数据存储
D、 MongoDB中每个⽂档都有_id字段
答案： B
12、添加⽂档是save和insert的区别在于如果_id对应的值已经存在，save直接更新，insert则报主键重复错误。
答案：正确
13、$inc修改器除了⽤于数值型数据，还可以⽤于字符串型数据。
答案：错误
14、将张三这条⽂档中的年龄字段删除应该使⽤哪个修改器？
；
15、在学⽣集合中按成绩的升序建⽴索引的语句为：sureIndex({"score":1})
答案：正确
16、切换数据库⽤（）命令
答案：
use
；
17、在sort( )命令中升序⽤-1表⽰。
答案：错误
18、将普通集合转换为固定集合要⽤convertToCapped完成。
答案：正确
19、请写出启动MongoDB客户端的命令（）
答案：
mongo
；
20、删除集合students的命令为（）
答案：
db.students.drop();db.students.drop( )
；
21、$pop可以删除数组中的第⼀个元素或者最后⼀个元素。
答案：正确
22、MongoDB是关系型数据库。
答案：错误
23、移除⽂档中的某个字段应该⽤（）修改器
答案：
$unset
；
24、字段重命名⽤$rename修改器
答案：正确
25、db表⽰查看当前数据库
答案：正确
26、db.students.insert({"name":"张三"})该语句没有指定_id字段，运⾏会出错。
答案：错误
27、打开MongoDB，打开服务，连上客户端，切换到exam数据库，只需截切换到exam数据库这条命令及结果。
28、向students集合中添加如下⽂档：
{"_id":"1001","name":"程明","sex":"男","age":19,"major":"计算机应⽤技术","credits":52,score:92} {"_id":"1002","name":"刘萍","sex":"⼥","age":18,"major":"移动应⽤开发","credits":51,score:88}
{"_id":"1003","name":"张静","sex":"⼥","age":20,"major":"计算机应⽤技术","credits":48,score:96} {"_id":"1004","name":"陈好","sex":"⼥","age":20,"major":"软件技术","credits":53,score:97}
{"_id":"1005","name":"施⾏","sex":"男","age":20,"major":"计算机应⽤技术","credits":54,score:60} {"_id":"1006","name":"刘⽂平","sex":"⼥","age":18,"major":"软件技术","credits":50,score:86}
{"_id":"1007","name":"李德胜","sex":"男","age":20,"major":"计算机应⽤技术","credits":55,score:95} {"_id":"1008","name":"苏锦州","sex":"男","age":18,"major":"移动应⽤开发","credits":50,score:70} {"_id":"1009","name":"张⽂杰","sex":"⼥","age":20,"major":"软件技术","credits":53,score:40}
{"_id":"1010","name":"王林","sex":"男","age":18,"major":"移动应⽤开发","credits":47,score:87}
答案：
29、请⽤查询语句显⽰计算机应⽤技术专业的学⽣⼈数。
答案：
30、请⽤查询语句显⽰年龄⼤于19岁的⼥⽣信息。
答案：
31、请⽤查询语句显⽰计算机应⽤技术和软件技术专业成绩⼤于90分的学⽣姓名、性别、专业和成绩
答案：
32、请⽤查询语句显⽰移动应⽤开发专业和计算机应⽤技术专业年龄为19-20岁⼥⽣的姓名、性别和成绩答案：
33、请将陈好的专业(major)修改为移动应⽤开发。
答案：
34、请给软件技术专业的所有⼥⽣添加⼀个字段course，值为MongoDB
答案：
35、请将李德胜的年龄减少2岁
答案：
36、请删除计算机应⽤技术专业男⽣的成绩（score）字段
答案：
37、请删除所有成绩不及格的学⽣信息。
答案：
38、查询所有男⽣的姓名，性别，年龄信息，并且按照年龄的降序显⽰
答案：
39、请查询成绩最好的学⽣的姓名，年龄，专业和成绩信息
40、查所有学⽣信息，按照专业升序，年龄降序排列。
41、请删除学⽣集合。
答案：
42、向students集合中添加如下⽂档：
{"_id":"1001","name":"程明","sex":"男","age":19,"major":"计算机应⽤技术","credits":52,score:92}
{"_id":"1002","name":"刘萍","sex":"⼥","age":18,"major":"移动应⽤开发","credits":51,score:88}
{"_id":"1003","name":"张静","sex":"⼥","age":20,"major":"计算机应⽤技术","credits":48,score:96}
{"_id":"1004","name":"陈好","sex":"⼥","age":20,"major":"软件技术","credits":53,score:97}
{"_id":"1005","name":"施⾏","sex":"男","age":20,"major":"计算机应⽤技术","credits":54,score:60}
{"_id":"1006","name":"刘⽂平","sex":"⼥","age":18,"major":"软件技术","credits":50,score:86}
{"_id":"1007","name":"李德胜","sex":"男","age":20,"major":"计算机应⽤技术","credits":55,score:95}
{"_id":"1008","name":"苏锦州","sex":"男","age":18,"major":"移动应⽤开发","credits":50,score:70}
{"_id":"1009","name":"张⽂杰","sex":"⼥","age":20,"major":"软件技术","credits":53,score:40}
{"_id":"1010","name":"王林","sex":"男","age":18,"major":"移动应⽤开发","credits":47,score:87}
答案：
43、请⽤查询语句显⽰计算机应⽤技术专业的学⽣⼈数。
答案：
44、查所有学⽣信息，按照专业升序，年龄降序排列。
答案：
45、爬取中国电影票房⽹（www.doczj/doc/8849a1d8cec789eb172ded630b1c59eef9c79a6a.html /），分析⽹页内容，爬取电影名称、当⽇排⽚、当⽇⼈次、当⽇预售票房、实时累积票房等数据，并将数据存储到MongoDB数据库中。
答案：
46、爬取“世界⼤学城空间”留⾔板⽹页信息
（www.doczj/doc/8849a1d8cec789eb172ded630b1c59eef9c79a6a.html /SpaceShow/leaveword/List.aspx?
uid=319211）的评论⽤户名、评论⽤户地址、评论时间、评论内容、回复次数，并将结果存储到MongoDB中。
47、
【任务描述】
任务1-1 安装mongoDB数据库mongodb和mysql结合
任务1-2 启动mongoDB服务端和客户端
任务1-3 使⽤配置⽂件启动mongoDB服务端和客户端
任务1-4 将mongoDB服务器作为本地服务启动
【任务要求】
1、完成实验报告并上传：把操作过程的关键步骤截图下来，每张图⽚辅以⽂字的说明，每个任务的截图张数为（3-5张）。
2、作业标题为：【第1次作业】mongoDB的安装、启动与配置
答案：
48、请完成实训任务⼀的内容，并以附件形式提交。SWF或者doc格式都可。
49、环境变量.txt
答案：
50、在Windows平台下安装mongoDB 3.4版本，并配置好环境变量
答案：
51、⼿动启动mongoDB服务端和客户端
答案：
52、使⽤配置⽂件启动mongoDB服务端和客户端
答案：
53、将mongoDB服务器作为本地服务启动
答案：
54、使⽤命令创建数据库myDB和集合collection1
答案：
55、使⽤命令查看当前所有数据库
答案：
56、使⽤命令切换到数据库testDB
答案：
57、使⽤命令显⽰当前的数据库
答案：
58、使⽤命令删除当前数据库testDB
答案：
59、使⽤命令显式创建集合students
答案：
60、使⽤命令显式创建集合teachers，要求该集合⼤⼩固定为1G，集合中最多允许1万条记录
答案：
61、使⽤命令隐式创建集合employees，该集合⾥⾯有⼀条记录【姓名：张三，年龄：25，职位：程序员，部门：研发部，⼯资：9000】
答案：
62、使⽤命令查看当前数据库当中的所有集合
答案：
63、使⽤命令删除集合employees
答案：
64、⽤insert()向students集合中添加：_id为1001，姓名为张三，年龄为20的⽂档。
答案：
65、⽤save()向students集合中添加：姓名为尼古拉斯赵四，年龄为20的⽂档。
答案：
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