Sqlg is a tinkerpop 3 implementation on top of a rdbms.
'org.umlg:sqlg-benchmark-hsqldb:1.1.0.RC2'
<dependency>
<groupId>org.umlg</groupId>
<artifactId>sqlg-benchmark-hsqldb</artifactId>
<version>1.1.0.RC2</version>
</dependency>
<dependency org="org.umlg" name="sqlg-benchmark-hsqldb" rev="1.1.0.RC2"/>
"org.umlg", "sqlg-benchmark-hsqldb", "1.1.0.RC2"