An overview of two types of graph databases: property databases and knowledge/RDF databases, together with their dominant respective query languages, Cypher and SPARQL. Also a quick look at some property DB frameworks, including TinkerPop and its query language, Gremlin.
![Graph Database Query Languages](https://cdn-ak-scissors.b.st-hatena.com/image/square/7f94111933972145c2c30bdf979a53bb52dc79e8/height=288;version=1;width=512/https%3A%2F%2Fcdn.slidesharecdn.com%2Fss_thumbnails%2Fgraphdatabasequerylanguages-180907034118-thumbnail.jpg%3Fwidth%3D640%26height%3D640%26fit%3Dbounds)