In order to meet the requirement of high concurrency and high availability of cloud database, based on the analysis of various relational and database, this paper proposes an extensible relational Cloud database scheme by using the convenience and scalability of relational data. This scheme presents a new system architecture. Database read-write process data merge process data model and structure and storage and analyze the bottleneck of the system architecture theory Finally, the data consistency availability and online running performance are analyzed and the results show that this scheme is feasible.
Key words: Cloud Database Scalable mass data storage distributed transaction
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