This scheme directly stores XML nodes as records into a paged file to build up the primary index of the native XML store and implement the persistent document object model, thus retaining the original tree structure of XML data. 该方案将XML节点作为记录直接存储到分页文件中,建立起原生XML存储的主索引,实现了持久化文档对象模型,从而保持了XML数据原有的树形结构。