Caching stores the results from these views or procedures in an intermediate storage that could be either a file or a relational database.
缓存将这些视图或过程的结果保存在中间存储中，以文件或关系型数据库的形式。
External stored procedures are often used to access legacy data stores and legacy application systems.
常常使用外部存储过程访问遗留数据存储和遗留应用程序系统。
Like the other section explain procedures, it stores the explain output in the explain tables for processing using any existing explain tools, such as db2exfmt.
与其他片段解释过程类似，它会将解释输出存储到解释表中，以便使用任何现有的EXPLAIN工具进行处理，如db2exfmt。
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