Before we link to the database, and did not enter the account number and password. That's because we have to start certification and it
is usually created in the database admin user. So here then use admin
db: Displays the current database is good which is confirmed admin
Open Certification
Execution mongo.exe prompted again then, show dbs suggesting no authority
delete users
The database is created in the admin can grant access to other databases
Test1 create a user
queries the user list
to delete user test1
Modify User
The super administrator role can read and write into the database of
user roles view the modified
change Password
