MongoDB Create DataBase

The MongoDB Create DataBase statement is used to create a new database in MongoDB.

Create DataBase Syntax :

The syntax of the Create DataBase is −

use database_name


Create DataBase Example :

The Example of the Create DataBase is −

Note:-If the database name already exists than "use" command will connect you to the database, but if the database does not exist, the command will create a new database.

use mydb;


If you want to check the currently connected database than type "db" command. The command will show the currently connected database name. The command is very helpful when a user connects to multiple databases.

\\Currently connected database
> db
mydb


-------------------
-------------------


\\list down all the databases and their size on the disk.

> show dbs

admin  0.000GB
local  0.000GB  
 


The database is not created until you save a document in it, now we are creating an collection user and inserting a document into it.



> db.user.insert({name: "mayank", age: 26})
WriteResult({ "nInserted" : 1 })



> show dbs
admin          0.000GB
mydb           0.000GB
local          0.000GB

 




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