[Tracker] Searching with Meta Tracker

[John Bestevaar <Josephus people net au>]

Hi All
I have just installed tracker-gui, 0.9.5-OubuntuOunstable.10.04.2 and 
all its dependencies via Synaptic on my Ubuntu 10.04 Gnome.  There is a 
lot to like for ordinary user like me. As a search for filenames or part 
thereof  tool its very fast. The gui window is simple and clean. I 
support open source projects not only by using and advocating them but 
also by donating to the ones i find useful.
As a photographer I have made a lot of images to which i have added 
Exif,IPTC,and XMP data via Digikam 2:1.2.0-0unbunt2
My understanding is that Digikam adds metadata to the actual image file 
as distinct from keeping it separate in its own database.
So i tried to search, with Tracker, for the words which i know to be 
present in the images Digikam image metadata.
No results.
After reading the documentation on the Tracker website  Wiki it dawned 
on me that i had no chance of understanding how Tracker works and or how 
to properly do metadata searches.
Would you be able to point me in the right direction?
Kind Regards John Bestevaar

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