It is built on top of Titan on Cassandra ut it's more than a graph database. We have a blog post in the works about that soon but take a look at https://grakn.a

It is built on top of Titan on Cassandra ut it's more than a graph database. We have a blog post in the works about that soon but take a look at https://grakn.ai/pages/platform/index.html https://grakn.ai/pages/platform/index.html for more.