Query Optimization for Databases in Cloud Environment: A Survey

Now days in the field of service oriented technologies cloud computing plays an important role. The main aim of cloud computing is to make people compute and store the resources easily and efficiently. Recent focus is deal with data expressing and searching. To improve the performance in the cloud requires the optimization of data processing time. Our study gives a comprehensive survey on numerous models and approaches used for query optimization to minimize execution time and to improve resource utilization. We have reviewed various research work done on query optimization for conventional SQL and MapReduce platforms.