db.dropDatabase() method is used to drop the database.
Note:- When you drop the database then all collections and documents will be deleted off from this database.
Syntax:-
use databaseName
> db.dropDatabase()
Example:- Firstly check all database
show dbs
Output:-
employee_management
school_management
school_management
Now delete the database
use employee_management
> db.dropDatabase()
Now check the database
show dbs
Output:-
school_management