The strategy of transform from XML and storage structure based on RDB for RDF

Abstract

XML can represent a logical structure as well as contents of data. So, the query processing for XML documents can be flexible and reflect user's mind in detail. However, such a query processing cannot catch the hidden semantics between resources, called by "Metadata". The search using metadata guarantees more fitting results for user's various queries and can return the results based on resources. Therefore, the metadata will play an important role in the future and the standard model for representing metadata like RDF is needed. RDF is written as a XML serialization using XML-based syntax. The existing XML documents also can be converted to RDF document with some modification. Designing XML to be in the RDF format has numerous benefits. So, the representation of data using the RDF format is activated for the next generation of Web. In this paper, we propose the strategy for the transition from existing XML documents into RDF. Then, we introduce the method for storing RDF using a resource, a Property, a Value, and a Class table in relational database.