在执行计划中，数据分析师必须确定运行测试所用的数据集，还要确定谁对这些数据集有访问权。
The data analyst must, as part of the execution plan, determine against which data sets the investigation tests can be run and who has access to those data sets.
DB 2中的静态SQL是一个强大的功能，可以通过预先执行某些工作来简化运行时的数据访问，例如确定数据库访问路径。
Static SQL in DB2 is a powerful capability that can streamline data access at run time by doing some of the work ahead of time, such as determining the database access path.
查询优化器使用数据库中的SYSSTAT目录视图来检索数据库对象的统计信息，并确定访问数据库的最佳方法。
The query optimizer USES the SYSSTAT catalog views in the database to retrieve the statistical information of the database objects and determine the best way to access the data.
JDBC适配器将详细查看数据库中的表，并确定需要什么服务来访问该数据。
The JDBC adapter looks at the tables in your database and determines what services it needs to access that data.
DB 2 UDb中包含了一个功能强大基于成本的查询优化器，用于确定访问数据的最佳策略。
DB2 UDB comes with a powerful cost-based query optimizer that determines the best strategy to access data.
DB 2 UDb中包含了一个功能强大基于成本的查询优化器，用于确定访问数据的最佳策略。
DB2 UDB comes with a powerful cost-based query optimizer that determines the best strategy to access data.
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