| 摘要 |
PURPOSE: A distribution processing system of query data for improving service performance through database distribution is provided to reduce database resource usage by distributing database traffic through a middleware system having relatively low use amount. CONSTITUTION: An SQL(Structured Query Language) mapper(224) maps a local database SQL through a real database SQL, generates the local database SQL which is replaced with the real database SQL, and manages the execution of the local database SQL. An SQL analyzer(225) inform a manager of the SQL which requires the long execution time, and analyzes the real database SQL by sentence. A data sync scheduler(226) performs data synchronization according to the synchronization cycle of the real database SQL. |
