Can applications based on the SAP HANA Cloud platform be integrated with any back-end data source?
The SAP HANA platform supports natively data import via flat files and the access to respective tables and views by using the Open Data Protocol (OData). More information can be found here:
For more advanced integrations into other platforms SAP offers additional solutions like the SAP Landscape Transformation (LT) replication or data services built with various client SDK's own data load programs. More information can be found here in the section "Getting to the data...":