Research Of Data Format Transformation Method Based On XML

The main investigation aim is to design a feasible Taxonomy Name Server (TNS) with the technology of XML-based data format transformation to manage and exchange biodiversity and ecological information from other heterogeneous databases over the Internet. The biologist can take advantages of the connivance of TNS System.The thesis will use the popular technologies of Java, Java Server Pagers (JSP) and Extensible Mark-up Language (XML) to develop. XML is used to build a formal inner format to transform data from heterogeneous databases over the Internet. The biodiversity and ecological information are extracted from these heterogeneous databases, and then transformed into formal XML documents. Finally, these XML documents are transformed into relational data to be stored in the TNS database system. Document Type Definition (DTD) is used to do the research of the mapping rule between XML documents and rational databases. With the research of data structure mapping (table structure mapping and table relation mapping) and data integrity constraint mapping (entity integrity mapping and reference integrity mapping), the mapping rules between XML documents and relational model are detailed discussed.The software engineering method is used to form Use Case Diagram, Sequence Diagram, Entity-Relation Diagram, Class Diagram and Active Diagram. Finally, with the Language of JAVA, XML and JSP, the whole system has been finished. In this paper, as the summary, the TNS system is evaluated and the prospects of the system are proposed.