A Critical Study on Semantic Web Systems and Semantic Web Services

The World Wide Web is the greatest repository of information having a decentralized design in which web pages are hosted by numerous computers, where each document can point to other documents, either on the same or different computers. As a result, individuals all over the world are able to provide content on the Web, allowing the growth exponentially as more and more people learn how to use it. However, it is difficult for machines to process and integrate this information meaningfully, so to process a web page intelligently, a computer must understand the data, and it is possible in Semantic Web. Relational database (RDB) is normally used for traditional data processing, where as Extensible Markup Language documents (XML Documents) are widely useful for performing online conversation in B2B applications. In fact XML data formats may be treated as de facto standard of data representation and exchange format for massive amount of enterprise information over the web.  Performance of the application depends on both type of the data structures used and the type of the information maintained in the structures. In this paper some semantic web concepts, different layers of Semantic web architecture, Web services and Semantic web services are presented.