服务结构(Service Fabric)接收一个系统描述符——它定义服务组件为构建‘系统’应该装配的方式，并定义它的‘目标状态’。

The service Fabric receives a System description which describes how the service components should be assembled to build the 'System' and defines its' Target State '.

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当将命令参数“SET PROFILE”添加到RUNSTATS命令时，将在表描述符和系统目录中注册或存储统计信息配置文件。

A statistics profile is registered or stored in the table descriptor and system catalogs when the command parameter "SET profile" is added to the RUNSTATS command.

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这个系统调用返回一个文件描述符。

This system call returns a file descriptor.

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