• RAWDEVSIZE程序分析可用原始设备空闲偏移量大小路径信息存储一个名为free_chunks的数据库中。

    The RAWDEVSIZE program analyzes available raw devices and stores the offset, size, and path information of free blocks into a database table named free_chunks.

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  • 可以基础访问路径中的节点描述符处获得统计信息

    You can obtain the statistics from the table descriptor of the table node in the underlying access path graph.

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  • 优化使用大小索引可用以及数据分布信息确定响应查询最佳路径

    The optimizer USES information such as table sizes, availability of indexes, and data distribution to figure out the optimal way to answer the query.

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  • 为了正确地评估这些访问路径需要DB 2编目中获取关于查询访问以及这些定义索引信息

    To properly assess these access path alternatives, you'll need information from the DB2 catalog about the tables accessed by the query and the indexes defined on those tables.

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  • 即使行数保持一致使用RUNSTATS更新统计信息更改数据内容可以产生不同的、也许更好访问路径

    Even if the number of rows in a table remains consistent, changes in data contents can result in different, and hopefully better, access paths using statistics updated by RUNSTATS.

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  • 该算法直接利用前一周期时延信息更新路由作为当前寻找路径的依据,在满足带宽时延波动约束条件下,使数据传送过程时延最小化。

    It can refresh the router table by the previous delay information to find a suitable path with the constraints of the bandwidth and the delay-jitter.

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  • 讨论了一种地理信息系统空间分析算法——最短路径分析,然后利用最短路径结果采用作业将灾害救援物资进行优化,给出调运方案

    Then it optimized the rescue supplies using form operation method based on the result of the shortest path, and selected the optimal transportation scheme.

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  • 讨论了一种地理信息系统空间分析算法——最短路径分析,然后利用最短路径结果采用作业将灾害救援物资进行优化,给出调运方案

    Then it optimized the rescue supplies using form operation method based on the result of the shortest path, and selected the optimal transportation scheme.

    youdao

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