Hi Sajmal,
S4H is a new business suite also built on NW , suggest to refer below URL.. .. HANA database is one of the pre-requisite .
http://hana.sap.com/content/dam/website/saphana/en_us/S4%20HANA/Final_Launch_S4HANA_Plattner.pdf
Hope it helps .
Regards,
Mrinal