You can generate the access plan using DB2's explain facility.

可以用 DB2 的 explain 工具程序生成存取计划。

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The SQL explain facility provides detailed information about the access plan that the query optimizer chooses for an SQL statement.

SQL 解释工具提供查询优化器为 SQL 语句所选择的访问计划的有关详细信息。

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The explain facility output conveniently displays the real cardinality (section actuals) and the estimated cardinality plan values for your comparison.

解释实用工具输出能够很方便地显示实际基数(片段实绩)和估计的基数计划值，供您进行比较。

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Thomas Vecchione, a principal with the company, was on hand to explain the process of converting the terminal into a modern, comfortable, efficient, environmentally sustainable facility.

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