The Research Of XML Data Storage Technology Based On Relational Database

Instead of HTML, XML is becoming the standard for information publication and exchange on the Web. Comparing to HTML, XML is simpler in its format and stronger in describing itself. The content, structure and representation of XML documents are independent. XML is more suitable for data representation and exchange on the Internet. Recently, XML has been widely used in various applications, and very large volumes of XML data have appeared in the Web. How to effectively store, manage and query the XML data has become an important topic worthy of study. Because of relational database is the most mature data management skills. XML data storage and management skills based on relational database, is a very feasible and effectively method. And it has gotten widespread attention in the academia.The thesis firstly analyzes the related theory and technology of XML data storage. discusses deeply the known XML document's relation storage strategy, and expatiates various storages strategy's advantage, flaw, adaptability and performance. Basing on Hybrid-Inlining Method, this thesis gives an improved mapping strategy. This mapping strategy completely convert the information of structure and semantic constraints into relational. Nowadays storage methods of XML data based on Schema in relational database usually ignores the semantic constraints, this thesis puts forward a mapping method to convert the XML Schema into the relational. Given the characteristics of all kinds of XML modules, this method manages to keep the integrity of schema information and semantic constraints of its schema information in the schema mapping process.