而在关系查询语言中，该查询表示起来将会困难得多。
This query would be much more difficult to represent in a relational query language.
与所存储的表一样，该关系查询的结果也是平面的、规则的、同构的。
Like a stored table, the result of a relational query is flat, regular, and homogeneous.
如果XML数据被分解到关系表，那么关系查询结果必须被转换回x ML。
If the XML data is shredded to relational tables, relational query results must be converted back to XML.
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