DbRead with multiple models - using results

Hi,

I'm trying to get data from 2 related models : fiches which is related to cat by a foreign key.
The query is working and I get the results in the data array but it's quite complicated to use because there is no model name.
Morever, the related model "cat" is at the same level than "fiches" the main table.
It's changing a bit from CFv4 and I'm lost.

Does anybody use this relation function with success ?

Thanks,
Florence