move sharepoint content database to another location

i want move content database to another location . i used this script in sql :

ALTER DATABASE database_name MODIFY FILE ( NAME = logical_name , FILENAME = 'new_path\os_file_name' )
after  restart sql server , my shrepoint site could not loaded ( blank page).

how can i do this for sharepoint database.?

is it possible only move content Database?

thanks

best regards.