Date Added: Oct 2010
Recently, the cloud computing platform is getting more and more attentions as a new trend of data management. Currently there are several cloud computing products that can provide various services. However, most cloud platforms are not designed for structured data management. So they rarely support SQL queries directly. Even though some platforms support SQL queries, their bottoms are traditional relational database, therefore, the cost for executing a subquery in RDBS may influence the overall query performance. How to improve query efficiency in cloud data management system, especially query on structured data has become a more and more important problem.