典型NoSQL數據庫的安裝和使用——MongoDB安裝和使用

安裝方式

采用apt-get install mongodb命令直接進行,采用源碼包安裝也可以

hadoop@dblab:/$ sudo apt-get update

hadoop@dblab:/$ sudo apt-get install -y mongodb-org

hadoop@dblab:/$ mongo -version

MongoDB shell version: 3.2.22

hadoop@dblab:/$ sudo service mongodb start #啟動MongoDB

hadoop@dblab:/$ mongo? #進入MongoDB Shell模式

> use school? ?#切換到shcool數據庫，使用時會自動創建

switched to db school

> db.createCollection('teacher')? ? #創建集合

{ "ok" : 1 }

> show dbs? ?#顯示數據庫列表

local? 0.000GB

school? 0.000GB

> db.student.insert({_id:1,sname:'zhangsan',sage:20})? ?#插入數據

WriteResult({ "nInserted" : 1 })

> db.student.insert({_id:2,sname:'lisi',sage:22})? ?#插入數據

WriteResult({ "nMatched" : 0, "nUpserted" : 1, "nModified" : 0, "_id" : 2 })

> use school

switched to db school

> show collections? ?#顯示當前數據庫的集合

student

teacher

#查找數據

> db.student.find()? ?#查找所有記錄

{ "_id" : 1, "sname" : "lisi", "sage" : 22 }

{ "_id" : 2, "sname" : "lisi", "sage" : 22 }

> db.student.remove({_id: 2})? ? #刪除數據

WriteResult({ "nRemoved" : 1 })

> db.student.find()

{ "_id" : 1, "sname" : "lisi", "sage" : 22 }

> db.student.insert({_id:2,sname:'zhangsan',sage:25})

WriteResult({ "nInserted" : 1 })

> db.student.find()

{ "_id" : 1, "sname" : "lisi", "sage" : 22 }

{ "_id" : 2, "sname" : "zhangsan", "sage" : 25 }

>?

#修改數據

> db.student.update({_id:2},{$set:{sage:88}},false,true)

WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })

> db.student.find().pretty()

{ "_id" : 1, "sname" : "lisi", "sage" : 22 }

{ "_id" : 2, "sname" : "zhangsan", "sage" : 88 }

#刪除數據

> db.student.remove({sname:'lisi'})

WriteResult({ "nRemoved" : 1 })

#刪除集合

> db.student.drop()

> show collections

teacher

> exit? #退出MongoDB Shell模式

bye