XML文档中时态信息存储方法的研究与比较

Research of Temporal Information Storage in XML Document

XML作为Web上新的数据发布语言,将成为Web下一代"数据表达"和"数据交换"的统一标准。然而XML文档很少是静止的,它经常会被修改,引入"时态表达"后,时态XML文档能够记录一系列的修改痕迹以及数据的变化过程。本文提出了将双时态XML数据模型映射到双时态XML文档的四种映射方法,最后通过实验对比了这些映射方法及其适用场合。

XML which is a new language for data representing, is expected to become a universal format for data exchange on the Web. Generally, we make some changes on XML documents as time goes by. Of course, XML is more natural than RDB on representing the temporal information. So the topic of representing, querying and updating temporal information in XML has received some attention. In this paper, four different ways of mapping bitemporal XML data model into a （bitemporal） XML document are discussed. Finally, all methods are compared.