The Design of Low-cost Query Middleware in Grid Database
基于低耗费调度的网格数据库查询中间件的设计

Grid Database is a new research area in Grid and Database. There is new requirement for query plan optimization in this area. This paper described the data relation between sub-query and database nodes, and gave a query middleware Low-Cost Query Middleware (LCQM) based on low-cost model. An algorithm of low-cost query plan was proposed. Experimental results demonstrate the enhanced efficiency of the query plan.