How to load data into SAP HANA database

there are four options:

1. Sybase Replication Server: Log based real time replication(limited to IBM DB2 database)

2. SAP Landscape Transformation(SLT): Trigger based real time or scheduled replication

3. SAP Business Objects Data Services: ETL based scheduled replication

4. Direct Extractor Connection: using BW extractors and delta capabilities to load data into SAP HANA database