Except that you
can't query across anything, because that would be useful.
One of my "acid tests" for a well-designed UI is if integrates metrics with configuration.
For example, VMware will show cute little inline bar charts of CPU and Memory utilisation when browsing virtual machines.
Similarly, some firewall or load-balancer products will show "hit counters" or similar stats next to rules or virtual servers.
For the other 99% of products out there, it's up to the end user to manually perform the "join" by clicking around the GUI. There may be an API, or a scripting tool, but without fail these won't provide a robust link (a foreign key) that would actually make this easy.