Hi Roxxy,
You should be able to store data in device and perform operations (CRUD), the database used in offline storage is ultraliteDB. You can either use SMP SP04 server with SMP SP05 SDK or SMP Cloud mobile services (it's in ramp up).
Documentation:
http://help.sap.com/saphelp_smp305sdk/helpdata/en/77/6c658a28e7473a9b996a2199fd854e/content.htm
Regards, Midhun
SAP Customer Experience Group - CEG
