V. CONCLUSION
Database Virtualization, by virtue of the rich benefits it
delivers, has been an unstoppable force. Cloud computing
has accelerated the adoption wave. The success of server
virtualization has led to virtualization of storage, networking
and now databases.
At this point, all aspects of the typical cloud
environment can be completely virtualized with the sole
exception of SQL databases. In this paper we studied, DBaaS
architecture provides significant benefits in terms of
increased security; efficiency and service levels while also
providing greater transparency and flexibility with costs.