I ntroduction Semantic web - Web 3.0 To make Internet data machine-readable. It provides a common framework - allows data to be shared and reused across application, enterprise, and community boundaries To enable the encoding of Semantic with the data Resource Description Framework Web Ontology Language
Resource Description Framework Data interchange on the Web Features - Data merging even if the underlying schemas differ. It specifically supports the evolution of schemas over time without requiring all the data consumers to be changed . Extends the linking structure of the Web to use URIs to name the relationship between things as well as the two ends of the link. I t allows structured and semi-structured data to be mixed, exposed, and shared across different applications