Consider Apache Marmotta as alternative platform

http://marmotta.apache.org/

> The goal of Apache Marmotta is to provide an open implementation of a Linked Data Platform that can be used, extended and deployed easily by organizations who want to publish Linked Data or build custom applications on Linked Data.

Among other it supports:

> Custom triple store (KiWi) built on top of RDBMS, with transactions, versioning and rule-base reasoning support

The issue names Apache Marmotta but no repository files, tests, or entry points. Start by reviewing the linked Marmotta platform and the existing triple-store backend; a concrete integration scope, implementation location, and acceptance criteria are needed before work can be considered done.

Written by the indexing model from the issue text.