Semantic based query optimization using ontology for knowledge management

Today´s Environment, Web contributes greatly to the creation of an ever-increasing global information database. Web is a collection of billions of web pages. Web 2.0 is purely based on keyword based searching. Because of using keyword based search engine, people may get relevant or irrelevant information. The amount of time spent to search data from web is enormous. To avoid these difficulties a meaning based search engine is needed. Semantic web is a platform to organize the web in meaningful way for better knowledge management. Our paper focuses on importance of semantic web, how the data are organized in the semantic web using RDF to frame ontology.