xml instance document

基本解释

Both companies want the XML instance document to indicate the namespace from which each component derives its definition.
两家公司都希望 XML 实例文档指出每个组件从哪个名称空间派生其定义。
Each XML instance document produced by IXRetail should specify a default namespace, which should be the IXRetail namespace.
IXRetail 产生的每个 XML 实例文档应指定一个缺省的名称空间，它应是 IXRetail 名称空间。
This means that whenever the element BookSales is referenced, the XML instance document will include number and price information with the title, the author, and the ISBN (see Listing 7).
这意味着无论何时引用元素 BookSales ，XML 实例文档都将在包含书名、作者和 ISBN 的同时包含销量和售价信息（请参阅清单 7）。