SAP BW can run on different databases like Oracle, SQL Server, HANA or any other database. When SAP BW is powered by HANA, you can check in SAP NetWeaver - version of NW and database on which it is installed.
Go to BI on HANA SAP system and login.
To check SAP NetWeaver version and the DB on which it is installed, click System → Status.
To check the version of SAP NetWeaver system, click the magnifying glass. You can see the Database version - HDB Release 1.0 SPS 11.