In this chapter, we will see how to create a database in MongoDB.
The use Command
MongoDB uses DATABASE_NAME is used to create a database. The command will create a new database if it doesn’t exist, otherwise, it will return the existing database.
Syntax
The basic syntax of use DATABASE statement is as follows −
use DATABASE_NAME
Example
If you want to use a database with the name <mydb>, then use the DATABASE statement would be as follows −
>use mydb
switched to db mydb
To check your currently selected database, use the command db
>db
mydb
If you want to check your databases list, use the command show dbs.
>show dbs
local 0.78125GB
test 0.23012GB
Your created database (mydb) is not present in the list. To display the database, you need to insert at least one document into it.
>db.movie.insert({"name":"adglob"})
>show dbs
local 0.78125GB
mydb 0.23012GB
test 0.23012GB
In MongoDB default database is tested. If you didn’t create any database, then collections will be stored in the test database.
