Chapter 1 Introduction In this chapter1 I talk about some structure of the thesis, and I give general idea what the thesis all about. Chapter 2 Ontology Theories We talk about ontology theory what is ontology? What is it good for? And we show the steps of developing ontology. Chapter 3 Knowledge representation In this chapter we show some tools for knowledge representation like: XML (Extensible Markup Language), RDF (Resource Description Framework), RDFS (RDF Schema). Chapter 4 Movie ontology In this chapter we present an example how to use ontology, based on ontology theory in chapter2. I create my own domain movie ontology. Chapter 5 Implementation In this chapter we introduce some programming tools to handle movie ontology. Chapter 6 Conclusion