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- Multi-weighted tree based query optimization method for parallel relational database systems 基于多重加权树的并行数据查询处理方法
- MULTIPLE-WEIGHTED-TREE BASED QUERY OPTIMIZATION METHOD FOR PARALLEL DATABASE SYSTEMS 基于多重加权树的并行数据库查询优化方法
- Linear-bushy-tree based query optimization algorithms for parallel database systems 基于线性浓密树的并行数据库查询优化算法
- The demonstration program of data base query. 数据库查询示例程序
- Reduce and reshape our cost base. 降低和重构成本基础。
- By using query optimization, database index, middle base and automatic data update technique, the DW project is very successful. 通过运用查询优化技术、数据仓库索引技术、带中间库的三层结构和数据仓库数据自动更新方案成功地建立了大连人寿保险业务数据仓库系统。
- It estimates the execution cost based on an internal cost model. 它会根据内部成本模型来预计执行成本。
- In this paper we point out the query optimization tactics based on prefetching, cache and data distributing and mobile agent technology in order to improve the query efficiency. 文章提出采用基于移动智能体技术的预取、缓存和基于机群的数据分布相结合的查询优化策略，以提高异构数据集成系统的查询效率。
- The query processor ran out of stack space during query optimization. 查询处理器在优化查询时堆栈空间不足。
- Selectivity Estimation is the base of spatial database query optimizer. 选择性估计是设计空间数据库查询优化器的基础。
- For each query, the query optimizer compares the execution cost of many alternative execution plans. 对于每个查询,查询优化程序将比较多个不同执行计划的执行成本。
- Average recoverable costs based on past experience. 收回费用平均数。
- The total cost to the query optimizer for executing this operation and all operations preceding it in the same subtree. 查询优化器执行此操作及同一子树内位于此操作之前的所有操作的总开销。
- We combine the distributed artificial intelligence with distributed database system and present an agent-based query optimization system model. In this model, we adopt deliberative agents based on BDI. （5）提出了一种基于Agent的查询优化系统模型，在该系统中，Agent采用了典型的慎思型体系结构，即BDI模型。
- The query optimizers usually require such estimation of cost to decide an efficient access query plan. 而为了执行查询的最佳化，通常需要估量这种运算的代价，来决定一个有效率的查询计画。
- The Optimization of R-tree Based Query 基于R树查询的性能优化
- The component that does this is called the query optimizer. 处理此过程的组件称为“查询优化器”。
- Packing charges are for the buyer's account on cost basis. 包装费用按实际成本由买方负担。
- This makes sure that the plan guide is used by the query optimizer. 这将确保计划指南可由查询优化器使用。
- Query optimizers estimate only intermediate result sizes. 查询优化器只估计中间结果的大小。
