Hi Muddassar,
SAP MII 15.0 can be installed on NW 7.40 which uses Hana as underlying database.
So basically all the data which MII stores would be stored in Hana DB.
1)In that case do we need Oracle or SQL or any other DB?
Answer: No as Netweaver is itself running on Hana
2)Is IDBC connectivity possible via SAP HANA?
Yes
3))How Enterprise HANA instance and Manufacturing HANA instance co-exist in this scenario?
You can connect to both from MII.
Regards,
Rohit Negi