Search Method in MDG

Hi

I have one question regarding search.

For reuse data models like MM and BP (C/S) it we integrated with TREX then backend date from active area (MARA,LFA1 and KNA1) are appeared during MDG search in search result area even though data does not exists in staging area in case of ES search method.

But in my case as my primary data base is HANA can I use DB search method instead of HA? Is TREX integration is still necessary for MDGS when my primary DB is HANA?