I have identified the query constructs my users normally use. would it make sense for me to create composite indexes to support those constructs and provide FIRST_ROWS capability? If I migrate from SE to IDS, I will loose the ability to write low-level functions with c-isam calls, but gain FIRST_ROWS along with other goodies like: SET-READS for index scans (onconfig USE_[KO]BATCHEDREAD), optimizer directives, parallel queries, etc?