My answer would be:
- There is a way to create IQDs of your FM-query subjects. This IQDs can be imported in Transformer to build cube. On my informations this method will be deprecated in new versions of Cognos FM (not in new versions of Transformer).
- Build Cube directly on FM-Packages, both relatonal and DMR objects are possible.
- Last option - and hopefully the very right answer - would be to create a DMR model on relational data, which feels and acts like a cube in the Cognos 8 BI Studios. This is ROLAP, not OLAP.