Just came up with a new idea, but i dont know how to make a diagram for it.

So, Organizations demand resources:

[Organization]-----<demand>------[Resoruces]

Resources has attributes like ResourceID, ResourcePrice, ResourceName.

So at this point...

Ok, thanks, this makes it easier to understand it.

So basicly, as the Data center is the one who holds this database, theres just one computer center to get the resources...