事实上，CouchDB具备足够的灵活性，只要底层文档没有发生发化，它就只需要运行这些函数一次，从而加快视图处理过程。
In fact, CouchDB is smart enough to run these functions only once, provided the underlying documents don't change, which makes views quite fast.
该函数将从一个文件中读取XML文档，然后以结构化数据输出的形式返回内容。
This function would read the XML documents from a file and return the contents as structured data output.
这些标签可由标准化的 SQL/XML 发布函数 定义，来重构原始文档或新的不同文档。
The tagging can be defined by the standardized SQL/XML publishing functions, to reconstruct the original or new and different documents.
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