Create Custom Data Class - fill with SQL Result.

I have 4500 users that are managed via Altiris 7.5 CMS, over the cloud, CEM.

I would like to create a custom data class and fill the data with a text value that would be returned via a sql script.

I know how to make the data class, i know how to locally run the script and provide output but I am not sure how to connect the two. The database is protected via a password so im not sure if that adds any complication. Any help would be appreciated.