I'd like to create a driver to monitor multiple tables (e.g, Node, RHE, ...) and then present some useful information in a table, such us, element type, severity (e.g, critical, major, ...) and number of active devices.

I'd like to retrieve only rows with severity different than "Normal", because I'm only interested in provide an overview of the alarms.

I was thinking of something like:

Any suggestion?