被嵌入元素的名称与被查询表中的字段名称对应，而文档元素 — XML 树的根 — 被相应地命名为 。
The names of the nested elements correspond to the field names within the table being queried, while the document element — the root of the XML tree — is, aptly, named .
XML Infoset与树结构非常相似，而且易于构造不是树的图(只需以不产生明显的根节点的方式连接节点)。
The XML Infoset is very similar to a tree structure and it is easy to construct a graph that is not a tree (just connect the nodes in such a way so that there is no obvious root node).
DataGraph对象以类似于树的形式表示数据，树的顶部是根对象，其下面为各个子项，与您在XML文档中看到的结构类似。
A DataGraph object represents data in a tree-like structure, with a root object at the top of the tree and children under it, similar to the structure that you might find in an XML document.
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