A path expression, on the other hand, navigates through a hierarchy of XML elements and returns the elements that are found at the end of the path.

而路径表达式则可以在分层的xml元素之间进行导航，并返回在路径末端找到的元素。

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Node is an XPath 1.0 expression that identifies the schema node to which the given binding declaration is associated (see XML Path Language for detailed XPath description).

node是一个XPath 1.0表达式，它指定与给定的绑定声明相关联的模式节点(对XPath的详细说明参见XML Path Language)。

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The first step of the path expression calls the db2-fn: xmlcolumn function to obtain a list of XML documents from the CONTACTINFO column of the CLIENTS table.

路径表达式的第一步调用db 2 - fn： xmlcolumn函数从clients表的contactinfo列获得一个xml文档的列表。

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