The first part is valuable as a catalog of generic issues, but the implementations of the patterns necessarily show a bias toward a particular language.

第一部分是一个宝贵的常见问题目录，但是模式的实现不可避免地出现了对某一特定语言的偏向。

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In a relational language, such a query would require a join that might span several data tables and system catalog tables.

而在关系语言中，这种查询需要进行也许跨越了多个数据表和系统目录表的联接。

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