Replicate Data from HANA DB to SAP ECC(Backend DB)

I am using HANA ondemand trial account . I know that replication of data from SAP system to HANA is possible through SLT.

But can we replicate data from HANA DB to SAP ecc system .Definitely some procedure must be there.

My question is how many ways are there to replicate data from HANA to SAP ecc system and their process.

Till now I have searched and found .

1. Data replication from HANA to Non SAP system through SLT.
2. OData service consumption in SAP gateway by redefining Odata service in SEGW T-Code.

Please help experts .Its little bit urgent.