How to combine and summarize infocube data in a query

Question

I have data in 2 infocubes that I need to combine in a query.  In addition, data in 1 of these infocubes needs to be summarized in this query.
A simplified example:
infocube1 (lots of records in this infocube)
costcenter        budget
11111              20
22222              40
infocube 2 (not so many records in this infocube)
cost center       code        expense
11111              A             10
11111              B              5
In a query I need to produce something like the following:
cost center        expense        budget
11111                15                 20
How can I do this?
Thanks in advance!
Den

Answer 1

Thanks for the helpful reply, Jr Roberto.  I didn't know about multiproviders, so that's a big help.  Unfortunately it still doesn't solve my problem (probably because I didn't give you the WHOLE story!). 
Because of some data inconsistencies between the 2 infocubes (some key fields have different structure, etc.) I think I have to use routines in an update rule for a new infocube to extract data from infocube 1 (in the above example).  Of course, when I do that, I'm extracting the same value from infocube1 multiple times -- once for each record in infocube2.
In other words, I think I need  to compress/summarize the data in infocube2 by removing a key field (multiple records become 1), and apply my abap routine in the update rule to extract from infocube1.
Does this make sense, or am I going about it all wrong???
Thanks again!
Den