Sqlg is a tinkerpop 3 implementation on top of a rdbms.
'org.umlg:sqlg-postgres:1.0.1'
<dependency>
<groupId>org.umlg</groupId>
<artifactId>sqlg-postgres</artifactId>
<version>1.0.1</version>
</dependency>
<dependency org="org.umlg" name="sqlg-postgres" rev="1.0.1"/>
"org.umlg", "sqlg-postgres", "1.0.1"