This includes information about establishing connections to the data source, remote server attributes, data type and function mappings, index information, and remote object statistics.

这包括关于建立到数据源的连接的信息、远程服务器属性、数据类型和函数映射、索引信息以及远程对象统计信息。

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In addition to the function attributes discussed earlier in this article, GCC provides attributes for variables and type definitions.

除了本文前面讨论的函数属性之外，GCC还为变量和类型定义提供了属性。

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However, optimization decisions are a complex function of various attributes, including the database environment and query characteristics, as well as the data itself.

然而，优化决策是各种属性的复杂函数，这些属性包括数据库环境、查询特征以及数据本身。

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