MongoDB CREATE Database

Grammar

The syntax format for MongoDB database creation is as follows:

Use database_name

If the database does not exist, create the database, or switch to the specified database.

Example

The following example we created the database Runoob:

> Use Runoob
switched to DB Runoob
> DB
Runoob

If you want to see all the databases, you can use the show DBS command:

> Show dbs
local  0.078GB
test   0.078GB

As you can see, the database Runoob we just created is not in the list of databases, and to display it, we need to insert some data into the Runoob database.

> Db.runoob.insert ({"Name": "Hello"})
Writeresult ({"ninserted": 1})
> show dbs
local   0.078GB
runoob  0.078GB
test    0.078GB

The default database in MongoDB is test, and if you do not create a new database, the collection will exist in the test database.