{
  "accounts": [
    {
      "id": "3-YLju5f3",
      "title": "買電腦",
      "time": "2023-02-08",
      "type": "-1",
      "account": "5500",
      "remarks": "為了上網(wǎng)課"
    },
    {
      "id": "3-YLju5f4",
      "title": "請女朋友吃飯",
      "time": "2023-02-08",
      "type": "-1",
      "account": "214",
      "remarks": "情人節(jié)聚餐"
    },
    {
      "id": "mRQiD4s3K",
      "title": "發(fā)工資",
      "time": "2023-02-19",
      "type": "1",
      "account": "4396",
      "remarks": "終于發(fā)工資啦!~~"
    }
  ],
  "users":[
    {
      "id": 1,
      "name": "zhangsan",
      "age": 18
    },
    {
      "id": 2,
      "name": "lisi",
      "age": 20
    },
    {
      "id": 3,
      "name": "wangwu",
      "age": 22
    }
  ]
}

// 啟動服務(wù)
mongod
// or
mongod --dbpath "C:\data\db
// 啟動 MongoDB Shell 并連接到 MongoDB 實例
mongosh

// 顯示所有的數(shù)據(jù)庫
show dbs
// 切換指定數(shù)據(jù)庫
use 數(shù)據(jù)庫名
// 刪除數(shù)據(jù)庫
use 數(shù)據(jù)庫名
db.dropDatabase()
// 創(chuàng)建集合
db.createCollection('集合名稱')
// 顯示當(dāng)前數(shù)據(jù)庫的集合
show collections
// 刪除某個集合
db.庫名.drop()
// 重命名集合
db.庫名.renameCollection('newName')

// 插入文檔/
db.集合名.insert(文檔對象)
// 查詢文檔
db.集合名.find(查詢條件)
// 更新文檔
db.集合名.update(查詢條件, 新文檔)  
db.users.update({name: 'Bob'},{age: 18})
db.集合名.update({name:'Bob'},{$set:{age:19}})
// 刪除文檔
db.集合名.remove(查詢條件)
//  remove() 方法已經(jīng)被棄用
// 刪除第一個匹配的文檔
db.collection.deleteOne( { name: '張三' });
// 刪除所有匹配的文檔
db.collection.deleteMany( { name: '張三' });