what do you mean by Graph Based Search Engines?

[nikhil]

A graph database is based on graph theory.As database is created with web front end and configurable storage engines (MYSQL, PostgreSQL, Files, and Hadoop). Graph based engines is a database that uses graph structure with nodes, edges, and properties to represent and store data. Information from the World Wide Web (WWW). While searching the huge digital library available in the WWW, every effort is made to retrieve the most relevant results. Nodes represent entities such as people, business, accounts, or any other item you might want to keep track of.