Thanks for the good answer, but I'm afraid its tending to a wrong direction (hard to bring my thoughts to words w/o using my monther tongue). I don't want to monitor the database. More I like to do reporting over some data:
Processes are in my example an external dataset -- something like a craftsman is working at a special task for example. Also I canot say for sure, which intervalls and which time period I need a report for -- this is depending on user's wish.