Link

Link to information about business questions and answers for Oracle Transactional Business Intelligence (OTBI) Embedded Analytics Cloud, HCM Subject areas:  http://www.oracle.com/technetwork/documentation/otbi-hcm-2225528.html

And for OTBI-E subject areas. The advantage of this is, that it is indeed very similar to Oracle BI Applications (OBIA) and can easily be applied for the same:

http://www.oracle.com/technetwork/documentation/otbi-e-2247768.htm