mongoDB Api

show dbs

show tables

show collections

 

use user

db.createCollection('config_collection')

 

use user

db.user_collection.insert({username:'tom'}) 

db.user_collection.insertOne({username: jhoe})

 

use user

db.dropDatabase()

 

use user

db.user_collection.drop()

 

use user

db.config_collection.find()

db.config_collection.findOne()

db.config_collection.find().pretty() //格式化显示