... multi-path optimization 多路径优化 Data-path Optimization 数据路径优化 Tool Path Optimization 孔加工路径优化 ...
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尽管DB 2优化器对选择最佳访问路径有所帮助，但结果还是依赖于输入数据，优化器无法访问或控制这些数据。
Although the DB2 optimizer is helpful for selecting the best access path, the result depends on the input data, which is often not accessed or controlled by the optimizer.
访问计划描述访问路径，这些路径是DB 2优化器为sql语句访问数据而选择的。
Access plan describes the access path that the DB2 optimizer has chosen for accessing data for an SQL statement.
针对单个问题的优化：本质上，层次数据库就通过一条指定的路径来优化数据访问。
Optimized for one problem: By their nature, hierarchical databases optimized access to the data through one specific path.
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