SQL Server: Add a Read-Only Account using SQL authentication

I need to create a read-only account using SQL authentication to login SQL Server. There are several steps are needed to prepared and they are shown below:

1. Ensure the authentication of SQL Server

    (1) Right click the SQL Server and select "Properties"

    (2) Under page "Security", click "SQL Server and Windows Authentication mode" and then click button "OK"

2. Create a read-only account

    (1) Right click folder "Security" and select create a new login

    (2) Under page "General", type login name, password for SQL authentication and default database

    (3) Under page "User Mapping", click the designated database and set db_datareader in its role membership

    (4) Click button "OK"