6Widom J.Data Management for XML Research Directions.Document of July 1999 Appears in IEEE Data Engineering Bulletin, Special Issue on XML, 1999,22(3):44-52
7Quass D,Rajaraman A,Sagiv Y,et al.Querying Semistructured Heterogeneous Information. In International Conference on Deductive and Object-oriented Databases, 1995
8W3C Extensible Stylesheet Language(XSL)Version 1.0.W3C Working Draft,2000-10-18
4Dekker M A C, Etalle S. Audit-based access control for e- lectronic health records[ J]. Electronic Notes in Theoretical Computer Science, 2007, 168:221 -236.