Hi Santosh,
It' all about setting up user and schema in SAP HANA, user and rfc connection in SAP System. create http connection between your sap system and hana.
Maintain the data source names that you want for DXC setup.
Then it's like loading data from ecc to bw DS(PSA) using process chain.
have a look at the below doc
http://www.saphana.com/docs/DOC-2301
Regards,
Venkat