Neo4j is a graph database. It is an embedded, disk-based, fully transactional Java persistence engine that stores data structured in graphs rather than in tables.
'org.neo4j:parent-central:2'
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>parent-central</artifactId>
<version>2</version>
</dependency>
<dependency org="org.neo4j" name="parent-central" rev="2"/>
"org.neo4j", "parent-central", "2"