Hi,
I do not understand your question about MARIA (are you talking about the database?)
OCS inventory supports a lot of inventory informations (Hardware, software, network, etc.), including the "officepack" plugin (if you install it on the server) that allows Microsoft Office keys to be retrieved.
> For OfficePack plugin, a VBS file is also to be copied to the client agent.
Regards, Stéphane
PS: Can you also modify the title (in English please) of your post so that other contributors can also help you?