Cacti

I’m trying to create a Script Query to graph the number of financial deals in a position keeping system. Basically, the output is a count of the rows in tables that contain these deals. I’ve searched the forum and haven’t found anything in the form of a walkthrough for script queries, so I thought –...

Is there any difference between doing that and a script that imports one row? Is there a way to write a script to send the data as a datasource?

Any examples I can look at that are doing this?

I'm using a monitoring tool that keeps time series data in a mysql database. Is it possible to graph the data in these tables with cacti? Since the data comes from multiple hosts, I'd rather not poll the data and feed it to cacti.

Thanks in advance for any help
Anthony