Hello Pradedeep,
Integration with Big data like Hadoop, Teradata, etc.. or any other sources is done by SDA(Smart Data Access) in SAP HANA.
Bca, SAP HANA Database consists 2 types of table or data , i.e Hana Table or Data and Virtual Table or Data.
1. Hana Table lies inside of SAP HANA Database for combining its own data.
2. Virtual Table, which is used for combining SAP HANA data with other heterogeneous data sources like Hadoop, Teradata, SAP Sybase ASE and SAP Sybase IQ.
This is called Smart Data Access(SDA).