Abstract: The Relational databases have been used for several decades as the database technology for most traditional data-centric storage applications. Recently there has been much attention in graph data stores as an effective technology for highly connected data. This paper reports the basic concepts and technologies relating to NoSQL graph data stores and compares graph database with common relational database system. It also describes different types of NoSQL data stores and its applications.

Keywords: Graph Database, Relational Database, Data Model, No SQL.