MongoDB Common Commands

Show DBS View all databases
Show Tables View all collections
db Displays the current database
use+name switches to the specified database and creates a new if it does not exist
A document is a set of key-value (Key-value) pairs (that is, Bson). MongoDB documents do not need to set the same fields, and the same fields do not require the same data type
{"Name": 2, "Age": 169}
{"Name": "Óin", "Age": 167}
{"Bianhao": +, "age": 82}
Create a fixed-size collection db.createcollection ("Mycoll", {capped:true, size:100000})
Db.runoob.insert ({"Name": "Rookie Tutorial"}) inserting data into the database
db.dropdatabase () Delete the current database
db.collectionname.drop () Delete collection

MongoDB Common Commands