Dear Chandrababu,
The Client is interface between SAP Hana Database and any other application. Its like as connector, like ODBC, SQL Client, Oracle Client, DB2 Client.
The SAP HANA Studio is Graphical User Interface like as MS SQL Studio and Sybase Central. SAP Hana Studio available for All operation systems.
The SAP HANA studio is a collection of applications for the SAP HANA appliance software. It enables technical users to Manage the SAP HANA database, to Create and Manage User Authorizations, and to Create new or Modify existing Models of data in the SAP HANA
Thanks & Regards,
V Srinivasan