Critical path is typically the requirement that user-facing functionality be operational in order for the solution to be of value to the end user.
关键路径是为了解决方案对最终的用户有价值而使面向用户的功能按照一定的顺序进行操作的需求。
An access path graph not only describes the "operational details" of query execution, it also describes how the data flows.
访问路径图不但描述“操作细节”，而且描述数据如何流动。
The description of each operation includes a Query Tuner access path graph that explains its operational semantics.
每一个操作的描述都包括一个解释其操作语义的 Query Tuner 访问路径图。
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