Research of Temporal XML and Querying
双时态XML查询中now语义失真的研究与扩展

We will study how to query temporal information in XML documents. The temporal information is expressed in the xml documents through Single Attribute Expression Method . In this paper,we will first discuss how to solve the semantic distortion problem of now ,and then make the XQuery to support the temporal querying in the XML document and show the cases of querying the temporal information in the xml documents.