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- In query optimization module,the technique of query preprocessing and pulling subquery up is introduced,then the access path selection and the account method of const evaluation are discusse... 最后对测试结果进行了分析,结果表明优化后的系统查询效率比原系统有了显著提高。
- Then the technique of query preprocessing and pulling sub query up is introduced.Finally, the access path selection and the account method of const evaluation are discussed in detail. 接着本文介绍了查询优化的关键技术:预处理技术和子查询提升技术等,再接着详细讨论了存取路径的选择和路径代价的估算方法。
- A Cost Model for Data Placement and Access Path Selection Problem in FC-SAN FC-SAN中的数据放置和访问路径选择的代价模型
- access path selection 存取路径选择
- These are the basic access path structures. 它们是基本访问路径结构。
- Hop count is used as the metric for path selection. 跳跃数被用来当作路径选择的权值。
- Class with the specified permission access and permission access path. 用指定的权限访问和权限访问路径初始化。
- Next, the Publishing Wizard prompts you for an alternative access path. 发布向导将接着,对于一个备用访问路径提示您。
- Which layer of the OSI model provides connectivity and path selection between two end systems where routing occurs? OSI模型的那一层提供连通性和路径选择在两台终端系统间往哪里路径选择的发生?
- OFRA consists of two parts: an intermediate node load evaluation algorithm and a routing path selection algorithm. OFRA 包含了两个部分:中继点负载评估理论以及路径选择理论。
- API cursor query contains an indexed view with a unique access path, but not at the base-table level. API游标查询包含具有唯一访问路径但不处于基表级别的索引视图。
- This means the optimizer will always attempt to formulate an access path for each query that reduces overall cost. 这意味着优化器将始终尝试为每个查询制定减少总体成本的存取路径。
- If the link is slower, the router may not be able to converge, routing updates might become lost, or suboptimal path selection may result. 如果该线路比较慢,路由器可能不会收敛,路由可能会失去更新,或者导致选择次佳的路径。
- By default, this alternative access path is set to the same location that you just specified. 此备用访问路径,默认被设置为同一位置,您只指定。
- We study the problems of partially connected network traffic camouflage, rerouting path selection in anonymity systems and scalar anonymity. 总结了系统中的攻击及其特点;比较了各种匿名通信系统抗攻击的能力。
- Using an index hint, force the optimizer to use a different access path on the table in question. 使用索引提示,强制优化器对相关表使用其他访问路径。
- Based on the network operation process, path selection can be processed in three phases: initial, in-progress, and partitioned. 根据无线随意网路的操作过程,路径的选择可分成三阶段来处理:启始、进行中及分开。
- If one of the disks or the access path fails, or if a sector on the disk cannot be read, the redundant information enables data regeneration. 如果其中一个磁盘或访问路径发生故障,或无法读取磁盘上的扇区,则通过冗余信息可以重新生成数据。
- Availability of the underlying connection or destination server is never a consideration in routing path selection, and no alternative routing path is considered. 在选择路由路径时,将不考虑基本连接或目标服务器的可用性,也不考虑备选的路由路径。
- It presents the notion of access path and the conceptual transaction analysis method against an E-R Schema based on access path. 提出了访问路径这一新概念,并以访问路径为基础讨论了E-R模式概念事务分析的方法,为解决上述问题提供了有益的途径。